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Bajaj S, Kumar S, Vattoth AL, Singh S, Bajaj M, Barfoot G, Bajaj G. Imaging of Shoulder Labral Injuries in Athletes: A Comprehensive Review. Semin Ultrasound CT MR 2025:S0887-2171(25)00010-1. [PMID: 40204115 DOI: 10.1053/j.sult.2025.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2025]
Affiliation(s)
- Suryansh Bajaj
- Department of Radiology, University of Arkansas for Medical Sciences, Little Rock, AR.
| | - Shruti Kumar
- Department of Radiology, University of Arkansas for Medical Sciences, Little Rock, AR
| | | | - Shiva Singh
- Department of Radiology, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Mahek Bajaj
- Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Garrett Barfoot
- Ross University School of Medicine, Lloyd Erskine Sandiford Centre at Two Mile Hill, St. Michael, Barbados
| | - Gitanjali Bajaj
- Department of Radiology, University of Arkansas for Medical Sciences, Little Rock, AR
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Flores DV, Huang BK. Postoperative Imaging in the Throwing Athlete. Semin Musculoskelet Radiol 2025; 29:112-123. [PMID: 39933545 DOI: 10.1055/s-0044-1796632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2025]
Abstract
Overhead throwing subjects the shoulder and elbow to substantial stresses, resulting in unique injury patterns that need to be recognized to allow appropriate treatment and return to sport. At the elbow, the ulnar collateral ligament (UCL) is the primary static restraint to valgus stress and the most commonly injured structure. UCL reconstruction is the most frequent surgical procedure in throwers and may be performed along with ulnar nerve transposition and flexor-pronator mass procedures. Posteromedial impingement and valgus extension overload syndrome are related entities that result in intra-articular pathology, such as osteophytes or bodies lodged within the olecranon fossa, also warranting excision at the time of UCL reconstruction. Shoulder injuries involve the rotator cuff (partial-thickness articular-sided tear), labrum (superior anteroposterior labral tear), and capsule (glenohumeral internal rotation deficit). Surgical options such as cuff repair, labral debridement or repair, and capsular release or tightening therefore target these structures.
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Affiliation(s)
- Dyan V Flores
- Department of Radiology, Radiation Oncology and Medical Physics, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Department of Medical Imaging, The Ottawa Hospital, Ottawa, ON, Canada
- Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Brady K Huang
- Department of Radiology, Division of Musculoskeletal Imaging and Intervention, University of California, San Diego Medical Center, San Diego, California
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Ibounig T, Sanders S, Haas R, Jones M, Järvinen TL, Taimela S, Docking S, Rämö L, Buchbinder R. Systematic Review of Shoulder Imaging Abnormalities in Asymptomatic Adult Shoulders (SCRUTINY): Abnormalities of the glenohumeral joint. Osteoarthritis Cartilage 2024; 32:1184-1196. [PMID: 38876437 DOI: 10.1016/j.joca.2024.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 05/20/2024] [Accepted: 06/04/2024] [Indexed: 06/16/2024]
Abstract
OBJECTIVE The primary objective was to determine the population prevalence of glenohumeral joint imaging abnormalities in asymptomatic adults. METHOD We systematically reviewed studies reporting the prevalence of X-ray, ultrasound (US), computed tomography, and magnetic resonance imaging (MRI) abnormalities in adults without shoulder symptoms (PROSPERO registration number CRD42018090041). This report presents the glenohumeral joint imaging findings. We searched Ovid MEDLINE, Embase, CINAHL and Web of Science from inception to June 2023 and assessed risk of bias using a tool designed for prevalence studies. The primary analysis was planned for the general population. The certainty of evidence was assessed using a modified Grades of Recommendation, Assessment, Development, and Evaluation (GRADE) for prognostic studies. RESULTS Thirty-five studies (4 X-ray, 10 US, 20 MRI, 1 X-ray and MRI) reported useable prevalence data. Two studies were population-based (846 shoulders), 15 studies included miscellaneous study populations (1715 shoulders) and 18 included athletes (727 shoulders). All were judged to be at high risk of bias. Clinical diversity precluded pooling. Population prevalence of glenohumeral osteoarthritis ranged from 15% to 75% (2 studies, 846 shoulders, 1 X-ray, 1 X-ray and MRI; low certainty evidence). Prevalence of labral abnormalities, humeral head cysts and long head of biceps tendon abnormalities were 20%, 5%, 30% respectively (1 study, 20 shoulders, X-ray and MRI; very low certainty evidence). CONCLUSION The population-based prevalence of glenohumeral joint imaging abnormalities in asymptomatic individuals remains uncertain, but may range between 30% and 75%. Better estimates are needed to inform best evidence-based management of people with shoulder pain.
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Affiliation(s)
- Thomas Ibounig
- Finnish Centre for Evidence-Based Orthopaedics, University of Helsinki, Helsinki, Finland; Department of Orthopaedics and Traumatology, Helsinki University Hospital, Helsinki, Finland.
| | - Sharon Sanders
- Institute for Evidence-Based Healthcare, Faculty of Health Sciences and Medicine, Bond University, Gold Coast, Australia
| | - Romi Haas
- School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - Mark Jones
- Institute for Evidence-Based Healthcare, Faculty of Health Sciences and Medicine, Bond University, Gold Coast, Australia
| | - Teppo Ln Järvinen
- Finnish Centre for Evidence-Based Orthopaedics, University of Helsinki, Helsinki, Finland; Department of Orthopaedics and Traumatology, Helsinki University Hospital, Helsinki, Finland
| | - Simo Taimela
- Finnish Centre for Evidence-Based Orthopaedics, University of Helsinki, Helsinki, Finland; Department of Orthopaedics and Traumatology, Helsinki University Hospital, Helsinki, Finland
| | - Sean Docking
- School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - Lasse Rämö
- Finnish Centre for Evidence-Based Orthopaedics, University of Helsinki, Helsinki, Finland; Department of Orthopaedics and Traumatology, Helsinki University Hospital, Helsinki, Finland
| | - Rachelle Buchbinder
- School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
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Thacher RR, Varady NH, Khilnani T, Camp CL, Dines JS. Current Concepts on the Management of Shoulder Instability in Throwing Athletes. Curr Rev Musculoskelet Med 2024; 17:353-364. [PMID: 38918331 PMCID: PMC11336015 DOI: 10.1007/s12178-024-09910-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/10/2024] [Indexed: 06/27/2024]
Abstract
PURPOSE OF REVIEW The management of shoulder instability in throwing athletes remains a challenge given the delicate balance between physiologic shoulder laxity facilitating performance and the inherent need for shoulder stability. This review will discuss the evaluation and management of a throwing athlete with suspected instability with a focus on recent findings and developments. RECENT FINDINGS The vast majority of throwing athletes with shoulder instability experience subtle microinstability as a result of repetitive microtrauma rather than episodes of gross instability. These athletes may present with arm pain, dead arms or reduced throwing velocity. Recent literature reinforces the fact that there is no "silver bullet" for the management of these athletes and an individualized, tailored approach to treatment is required. While initial nonoperative management remains the hallmark for treatment, the results of rehabilitation protocols are mixed, and some patients will ultimately undergo surgical stabilization. In these cases, it is imperative that the surgeon be judicious with the extent of surgical stabilization as overtightening of the glenohumeral joint is possible, which can adversely affect athlete performance. Managing shoulder instability in throwing athletes requires a thorough understanding of its physiologic and biomechanical underpinnings. Inconsistent results seen with surgical stabilization has led to a focus on nonoperative management for these athletes with surgery reserved for cases that fail to improve non-surgically. Overall, more high quality studies into the management of this challenging condition are warranted.
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Affiliation(s)
- Ryan R Thacher
- Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA.
| | - Nathan H Varady
- Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Tyler Khilnani
- Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | | | - Joshua S Dines
- Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
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Takahashi M, Mutsuzaki H, Iwamoto K, Monma M, Tomita K, Mizukami M. Morphologic changes in the posterior glenoid rim is independently associated with rotator cuff impingement in baseball players. Heliyon 2024; 10:e33064. [PMID: 39035492 PMCID: PMC11259791 DOI: 10.1016/j.heliyon.2024.e33064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 07/23/2024] Open
Abstract
Background The morphological changes in the posterior glenoid rim are unknown in relation to the area of rotator cuff tendons pinched within the glenohumeral joint in the throwing shoulders of baseball players. Therefore, this study aimed to clarify whether these changes are associated with the area of impingement in baseball players. Methods Overall, 25 asymptomatic male college baseball players (average age19.8 years, 11.6 years of competing, and 50 shoulders) participated in this study. The area of impingement (AOI, mm2) and posterior glenohumeral distance (PGHD, mm) were measured using magnetic resonance imaging to quantitatively assess the impingement area of the rotator cuff tendon within the glenohumeral joint and the morphologic change in the posterior glenoid rim. These magnetic resonance imaging assessments were measured at 90° shoulder abduction with 90° and 100° external rotation. Multiple linear regression analysis was performed to determine whether AOI is predicted by PGHD. Findings Multiple linear regression analysis showed that the PGHD was a predictor of the AOI at external rotation 90° (β-coefficient = 0.738, R2 = 0.77, P < 0.001) and external rotation 100° position (β-coefficient = 0.879, R2 = 0.76, P < 0.001). Interpretation This study found that the area of impingement was associated with posterior glenohumeral distance. Therefore, these findings may indicate that complex shoulder joint morphologic changes result in a disabled throwing shoulder.
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Affiliation(s)
- Makoto Takahashi
- Department of Physical Therapy, School of Health Sciences, Japan University of Health Sciences, 2-555, Hirasuka, Satte-shi, Saitama, 340-0145, Japan
- Department of Rehabilitation, Hitachino Orthopedic Clinic: 3-2-1 Hitachino Higashi, Ushiku-shi, Ibaraki, 300-1207, Japan
| | - Hirotaka Mutsuzaki
- Center for Medical Sciences, Ibaraki Prefectural University of Health Sciences, 4669-2 Ami, Inashikigun-Ami-machi, Ibaraki, 300-0394, Japan
- Department of Orthopaedic Surgery, Ibaraki Prefectural University of Health Sciences Hospital, 4773 Ami, Inashikigun -Ami -machi, Ibaraki, 300 -0331, Japan
| | - Koji Iwamoto
- Department of Physical Therapy, School of Rehabilitation, Tokyo Professional University of Health Sciences, 22-10, Shiohama 2-chome, Koto-ku, Tokyo, 135-0043, Japan
| | - Masahiko Monma
- Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences, 4669-2 Ami, Inashikigun-Ami-machi, Ibaraki, 300-0394, Japan
| | - Kazuhide Tomita
- Graduate School of Health Science, Ibaraki Prefectural University of Health Sciences, 4669-2 Ami, Inashikigun-Ami-machi, Ibaraki, 300-0394, Japan
| | - Masafumi Mizukami
- Graduate School of Health Science, Ibaraki Prefectural University of Health Sciences, 4669-2 Ami, Inashikigun-Ami-machi, Ibaraki, 300-0394, Japan
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Hoenecke H, Fiske JW, Tamayo AE, D'Lima DD. Evolution of the throwing shoulder: why apes don't throw well and how that applies to throwing athletes. J Shoulder Elbow Surg 2024; 33:1404-1417. [PMID: 38316235 DOI: 10.1016/j.jse.2023.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 12/04/2023] [Accepted: 12/17/2023] [Indexed: 02/07/2024]
Abstract
BACKGROUND Humans have unique characteristics making us the only primate that can throw well while most other primates throw predominately underhand with poor speed and accuracy. The purpose of this study is to illuminate the uniquely human characteristics that allow us to throw so well. When treating an injury such as a labral tear or capsule tear, this study hopes the reader can gain a better understanding of the issues that lead to the tear and those that may determine the success of treatment besides the actual repair. METHODS In addition to a review of scientific and medical literature, information was obtained from interviews and experience with primate veterinarians, anthropologists, archeologists, and professional baseball players. These sources were used to study the connection between evolutionary throwing activities and current sports medicine issues. RESULTS Arm acceleration requires a functional kinetic chain, rapid motor sequences, and the ability to absorb elastic energy in the shoulder. Successful treatment of the throwing shoulder requires awareness of the shoulder's position in the kinetic chain and correction of defects in the ability to execute the kinetic chain. Some problems in the shoulder could reflect regression to a more primitive anatomy or dyskinesis. Return of performance requires regaining the elasticity in the tissues of the shoulder to temporarily store kinetic energy. For example, tissue remodeling after rotator cuff repair continues for months to years; however, the newly formed tissue lacks the same elasticity of the native tendon. This suggests why throwing performance typically does not return for 7 or more months after repair even though there may be structural integrity at 3-4 months. CONCLUSION The shoulder has developed uniquely in modern man for the act of throwing. The anatomic deficiencies in primates for throwing provide an illustration of the more subtle changes that a throwing athlete might have that are detrimental to throwing. Nonhuman primates have been unable to demonstrate the kinetic chain sequence for throwing secondary to the lack of neurologic pathways required. Humans are more sophisticated and precise in their movements but lack robusticity in their bone and muscle architecture, seen especially in the human rotator cuff. Successful treatment of a throwing injury requires familiarity with the conditions that cause the injury or affect the rehabilitation process. The return of performance following injury or surgery requires regaining the elasticity in the tissues of the shoulder to temporarily store kinetic energy from the kinetic chain.
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Affiliation(s)
- Heinz Hoenecke
- Division of Sports Medicine, Department of Orthopaedic Surgery, Scripps Clinic, La Jolla, CA, USA; Shiley Center for Orthopaedic Research & Education at Scripps Clinic, La Jolla, CA, USA.
| | | | | | - Darryl D D'Lima
- Division of Sports Medicine, Department of Orthopaedic Surgery, Scripps Clinic, La Jolla, CA, USA; Shiley Center for Orthopaedic Research & Education at Scripps Clinic, La Jolla, CA, USA
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Kuhn JE. Adaptive pathology: new insights into the physical examination and imaging of the thrower's shoulder and elbow. J Shoulder Elbow Surg 2024; 33:474-493. [PMID: 37652215 DOI: 10.1016/j.jse.2023.07.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/14/2023] [Accepted: 07/21/2023] [Indexed: 09/02/2023]
Abstract
Throwing with high velocity requires extremes of glenohumeral external rotation of the abducted arm where particularly high forces in the shoulder and elbow are endured. Repeated throwing leads to dominant-arm bony remodeling of the humerus, glenoid, and elbow, and multiple soft tissue changes that would be considered abnormal. Many of these features are thought to be adaptive and protective. The purpose of this work is to (1) define the concept of adaptive pathology; (2) review the mechanics of the throwing motion; (3) review pertinent physical examination and imaging findings seen in asymptomatic throwers' shoulders and elbows and describe how these changes develop and may be adaptive-allowing the thrower to perform at high levels; and then (4) review the principles of surgical treatment in the throwing athletes, which should focus on reducing symptoms, but not necessarily restoring the thrower's anatomy to normal.
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Affiliation(s)
- John E Kuhn
- Vanderbilt Sports Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.
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Goes PK, Flores DV, Damer A, Huang BK. Shoulder and Elbow Injuries in Adult Overhead Throwers: Imaging Review. Radiographics 2023; 43:e230094. [PMID: 37917538 DOI: 10.1148/rg.230094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
Overhead throwing, particularly in baseball, subjects the shoulder and elbow to various unique injuries. Capsular contracture following repetitive external rotation shifts the humeral head posterosuperiorly, predisposing to glenohumeral internal rotation deficit (GIRD), Bennett, posterosuperior internal impingement (PSI), and superior labrum anterior-posterior (SLAP) lesions. GIRD represents loss of internal rotation at the expense of external rotation. Bennett lesion represents ossification of the posteroinferior glenohumeral ligament due to repetitive traction. PSI manifests with humeral head cysts and "kissing" tears of the posterosuperior cuff and labrum. Scapular dysfunction contributes to symptoms of PSI and predisposes to labral or rotator cuff disease. "Peel-back" or SLAP lesions occur when torsional forces detach the biceps-labral anchor from the glenoid. Finally, disorders of the anterior capsule, latissimus dorsi, teres major, and subscapularis are well recognized in overhead throwers. At the elbow, injuries typically involve the medial-sided structures. The ulnar collateral ligament (UCL) is the primary static restraint to valgus stress and can be thickened, attenuated, ossified, and/or partially or completely torn. Medial epicondylitis can occur with tendinosis, partial tear, or complete rupture of the flexor-pronator mass and can accompany UCL tears and ulnar neuropathy. Posteromedial impingement (PMI) and valgus extension overload syndrome are related entities that follow abundant valgus forces during late cocking or acceleration, and deceleration. These valgus stresses wedge the olecranon into the olecranon fossa, leading to PMI, osteophytes, and intra-articular bodies. Other osseous manifestations include olecranon stress fracture and cortical thickening of the humeral shaft. ©RSNA, 2023 Quiz questions for this article are available in the supplemental material.
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Affiliation(s)
- Paola Kuenzer Goes
- From the Division of Musculoskeletal Radiology, Laboratorio Delboni Auriemo, DASA Diagnostic Imaging, São Paulo, Brazil (P.K.G.); Department of Radiology, Radiation Oncology and Medical Physics, Faculty of Medicine, University of Ottawa, Ottowa, Ontario, Canada (D.V.F., A.D.); Department of Medical Imaging, The Ottawa Hospital, 501 Smyth Rd, Ottawa, ON, Canada K1H 8L6 (D.V.F.); Ottawa Hospital Research Institute, Ottawa, Ontario, Canada (D.V.F.); and Department of Radiology, Division of Musculoskeletal Imaging and Intervention, University of California San Diego Medical Center, San Diego, Calif (B.K.H.)
| | - Dyan V Flores
- From the Division of Musculoskeletal Radiology, Laboratorio Delboni Auriemo, DASA Diagnostic Imaging, São Paulo, Brazil (P.K.G.); Department of Radiology, Radiation Oncology and Medical Physics, Faculty of Medicine, University of Ottawa, Ottowa, Ontario, Canada (D.V.F., A.D.); Department of Medical Imaging, The Ottawa Hospital, 501 Smyth Rd, Ottawa, ON, Canada K1H 8L6 (D.V.F.); Ottawa Hospital Research Institute, Ottawa, Ontario, Canada (D.V.F.); and Department of Radiology, Division of Musculoskeletal Imaging and Intervention, University of California San Diego Medical Center, San Diego, Calif (B.K.H.)
| | - Alameen Damer
- From the Division of Musculoskeletal Radiology, Laboratorio Delboni Auriemo, DASA Diagnostic Imaging, São Paulo, Brazil (P.K.G.); Department of Radiology, Radiation Oncology and Medical Physics, Faculty of Medicine, University of Ottawa, Ottowa, Ontario, Canada (D.V.F., A.D.); Department of Medical Imaging, The Ottawa Hospital, 501 Smyth Rd, Ottawa, ON, Canada K1H 8L6 (D.V.F.); Ottawa Hospital Research Institute, Ottawa, Ontario, Canada (D.V.F.); and Department of Radiology, Division of Musculoskeletal Imaging and Intervention, University of California San Diego Medical Center, San Diego, Calif (B.K.H.)
| | - Brady K Huang
- From the Division of Musculoskeletal Radiology, Laboratorio Delboni Auriemo, DASA Diagnostic Imaging, São Paulo, Brazil (P.K.G.); Department of Radiology, Radiation Oncology and Medical Physics, Faculty of Medicine, University of Ottawa, Ottowa, Ontario, Canada (D.V.F., A.D.); Department of Medical Imaging, The Ottawa Hospital, 501 Smyth Rd, Ottawa, ON, Canada K1H 8L6 (D.V.F.); Ottawa Hospital Research Institute, Ottawa, Ontario, Canada (D.V.F.); and Department of Radiology, Division of Musculoskeletal Imaging and Intervention, University of California San Diego Medical Center, San Diego, Calif (B.K.H.)
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Saccheri P, Sabbadini G, Travan L. Two paleopathological cases suggestive of paralabral cysts of the shoulder. INTERNATIONAL JOURNAL OF PALEOPATHOLOGY 2022; 39:109-114. [PMID: 36347173 DOI: 10.1016/j.ijpp.2022.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 10/12/2022] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Abstract
OBJECTIVE To undertake differential diagnosis of scapular bone defects found in two medieval skeletons buried in different necropoles of Friuli Venezia Giulia (Italy) and to evaluate the clinical significance of paralabral cysts in the context of shoulder pathology. MATERIALS Individual JoT36 is an adult male exhumed from a necropolis belonging to a rural agricultural settlement dated to the 10th to 11th century A.D. Individual CIVT58 is an adult male from a Langobard necropolis dated to 630-670 A.D. METHODS Macroscopic examination of the skeletons was performed using standard osteological methods and review of pertinent clinical literature to assist differential diagnosis. RESULTS Between the glenoid cavity and the spinoglenoid notch of the right scapula of JoT36 there is a multilocular circular defect adjacent to the glenoid rim. On the neck of the left scapula of CIVT58, immediately above the spinoglenoid notch, there is a unilocular circular depression. In both cases, the cortical bone appears smooth without any evidence of erosion or sclerosis. CONCLUSIONS Skeletal findings and historical/archaeological contexts of both cases are compatible with the diagnosis of paralabral cysts. SIGNIFICANCE Paralabral cysts are relatively frequently observed in clinical settings but very few examples have been documented in paleopathological literature. This study seeks to improve recognition and interpretation of this pathology in historical/archaeological contexts. LIMITATIONS Findings from a case report can neither generate epidemiological information nor be generalized. SUGGESTIONS FOR FURTHER RESEARCH Identification of new cases may add valuable information about lifestyles and related shoulder pathologies in ancient times.
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Affiliation(s)
- Paola Saccheri
- Department of Medicine, Section of Anatomy and History of Medicine, University of Udine, P.le Kolbe 3, 33100 Udine, Italy.
| | - Gastone Sabbadini
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Strada di Fiume 447, 34100 Trieste, Italy.
| | - Luciana Travan
- Department of Medicine, Section of Anatomy and History of Medicine, University of Udine, P.le Kolbe 3, 33100 Udine, Italy.
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Abstract
» The thrower's shoulder has been a subject of great interest for many decades. Different theories have been proposed to clarify the pathophysiology, clinical presentation, and treatment options for this condition. In this review article, we summarize the relevant anatomy and pathophysiology and how these translate into signs, symptoms, and imaging findings. Also, a historical review of the treatment methodologies in the setting of an evolving concept is presented. » The initial event in the cascade is thickening and contracture of the posteroinferior capsule resulting from repetitive tensile forces during the deceleration phase of throwing. This is known as "the essential lesion" and is clinically perceived as glenohumeral internal rotation deficit (GIRD), and a Bennett lesion may be found on radiographs. » Change in the glenohumeral contact point leads to a series of adaptations that are beneficial for the mechanics of throwing, specifically in achieving the so-called "slot," which will maximize throwing performance. » The complexity of the throwing shoulder is the result of an interplay of the different elements described in the cascade, as well as other factors such as pectoralis minor tightness and scapular dyskinesis. However, it is still unclear which event is the tipping point that breaks the balance between these adaptations and triggers the shift from an asymptomatic shoulder to a painful disabled joint that can jeopardize the career of a throwing athlete. Consequences are rotator cuff impingement and tear, labral injury, and scapular dyskinesis, which are seen both clinically and radiographically. » A thorough understanding of the pathologic cascade is paramount for professionals who care for throwing athletes. The successful treatment of this condition depends on correct identification of the point in the cascade that is disturbed. The typical injuries described in the throwing shoulder rarely occur in isolation; thus, an overlap of symptoms and clinical findings is common. » The rationale for treatment is based on the pathophysiologic biomechanics and should involve stretching, scapular stabilization, and core and lower-body strengthening, as well as correction of throwing mechanics, integrating the entire kinetic chain. When nonoperative treatment is unsuccessful, surgical options should be tailored for the specific changes within the pathologic cascade that are causing a dysfunctional throwing shoulder.
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Affiliation(s)
- Giovanna Medina
- Jefferson Health 3B Orthopaedics, Philadelphia, Pennsylvania
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11
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Evaluation and treatment of shoulder injuries in tennis players: a review. CURRENT ORTHOPAEDIC PRACTICE 2022. [DOI: 10.1097/bco.0000000000001073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Takahashi M, Iwamoto K, Monma M, Mutsuzaki H, Mizukami M. The Area of Impingement in the Throwing Versus Nonthrowing Shoulder of Collegiate Baseball Players: An MRI Study of the Simulated Late-Cocking Phase of Throwing. Orthop J Sports Med 2021; 9:2325967121992133. [PMID: 34250168 PMCID: PMC8237223 DOI: 10.1177/2325967121992133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 10/28/2020] [Indexed: 01/03/2023] Open
Abstract
Background: During shoulder abduction and external rotation, internal impingement can
occur when compressive forces between the greater tuberosity and the
posterior glenoid rim pinch the undersurface of the rotator cuff. Previous
studies on internal impingement have focused on qualitative results such as
pathological findings; however, few studies have quantified the area of
impingement (AOI) of the rotator cuff muscles between the greater tuberosity
and the posterior glenoid rim. Purpose: To compare the AOI between the throwing and nonthrowing shoulders of baseball
players. Study Design: Controlled laboratory study. Methods: A total of 14 asymptomatic male collegiate baseball players participated in
this study. The AOI in both the throwing and the nonthrowing shoulders was
calculated using magnetic resonance imaging (MRI) scans. The MRI
measurements were collected with the shoulder at 90° of abduction and at 90°
and 100° of external rotation. The area, width, and depth of impingement as
well as cystic changes in the greater tuberosity and degeneration in the
posterior labrum were compared between the throwing and nonthrowing
shoulders. Results: The AOI was significantly greater in the throwing shoulders than in the
nonthrowing shoulders (90° of external rotation: 32.4 vs 19.1
mm2, respectively; 100° of external rotation, 28.0 vs 15.6
mm2, respectively; P < .001 for both).
Compared with the nonthrowing shoulders, there were more positive findings
in the throwing shoulders regarding greater tuberosity cystic changes (0 vs
7, respectively; P = .006) and posterior labral
degeneration (3 vs 13, respectively; P < .001). Conclusion: The AOI and the number of lesions in the greater tuberosity and posterior
labrum were greater in throwing shoulders than in nonthrowing shoulders.
Therefore, damage to the insertion of the rotator cuff muscles may affect
internal impingement. Clinical Relevance: Lesions in the greater tuberosity and posterior labrum in throwing shoulders
may increase the AOI by expanding the joint gap behind the glenohumeral
joint. Impingement of the greater tuberosity and the posterior glenoid rim
may lead to rotator cuff tears.
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Affiliation(s)
- Makoto Takahashi
- Department of Rehabilitation, Hitachino Orthopedic Clinic, Ushiku, Japan
| | - Koji Iwamoto
- Department of Physical Therapy, Ibaraki Prefectural University of Health Sciences, Ami, Japan
| | - Masahiko Monma
- Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences, Ami, Japan
| | - Hirotaka Mutsuzaki
- Center for Medical Sciences, Ibaraki Prefectural University of Health Sciences, Ami, Japan.,Department of Orthopaedic Surgery, Ibaraki Prefectural University of Health Sciences, Ami, Japan
| | - Masafumi Mizukami
- Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences, Ami, Japan
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Ueda Y, Sugaya H, Takahashi N, Matsuki K, Tokai M, Hoshika S, Onishi K, Hamada H. Prevalence and Site of Rotator Cuff Lesions in Shoulders With Recurrent Anterior Instability in a Young Population. Orthop J Sports Med 2019; 7:2325967119849876. [PMID: 31211152 PMCID: PMC6552367 DOI: 10.1177/2325967119849876] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Background Partial articular supraspinatus tendon avulsion (PASTA) lesions are often seen in shoulders of throwing athletes. PASTA lesions in anterior instability are also found in recurrent anterior glenohumeral instability. Purpose To investigate the prevalence and location of rotator cuff tears (RCTs), including PASTA lesions, in shoulders with recurrent anterior instability. Study Design Case series; Level of evidence, 4. Methods A total of 842 shoulders in 801 patients with recurrent anterior instability (647 men, 154 women; mean age, 24 years; age range, 13-40 years) who underwent arthroscopic surgery at the age of 40 years or younger were enrolled. During surgery, the thickness and the sites of RCTs as well as patient factors associated with RCTs were examined. Results RCTs were found in 57 shoulders (7%) in 56 patients. There were 4 shoulders with full-thickness RCTs and 54 shoulders with PASTA lesions. All lesions but 1 involved the anterior border of the supraspinatus (SSP). Participation in high-level athletics and older age at injury were associated with RCTs. Conclusion The incidence of RCTs was 7% in shoulders with recurrent anterior instability at age 40 years or younger. Most RCTs were PASTA lesions that involved the anterior border of the SSP.
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Affiliation(s)
- Yusuke Ueda
- Funabashi Orthopaedic Sports Medicine and Joint Center, Funabashi, Chiba, Japan
| | - Hiroyuki Sugaya
- Funabashi Orthopaedic Sports Medicine and Joint Center, Funabashi, Chiba, Japan
| | - Norimasa Takahashi
- Funabashi Orthopaedic Sports Medicine and Joint Center, Funabashi, Chiba, Japan
| | - Keisuke Matsuki
- Funabashi Orthopaedic Sports Medicine and Joint Center, Funabashi, Chiba, Japan
| | - Morihito Tokai
- Funabashi Orthopaedic Sports Medicine and Joint Center, Funabashi, Chiba, Japan
| | - Shota Hoshika
- Funabashi Orthopaedic Sports Medicine and Joint Center, Funabashi, Chiba, Japan
| | - Kazutomo Onishi
- Funabashi Orthopaedic Sports Medicine and Joint Center, Funabashi, Chiba, Japan
| | - Hiroshige Hamada
- Funabashi Orthopaedic Sports Medicine and Joint Center, Funabashi, Chiba, Japan
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Kercher JS, Runner RP, McCarthy TP, Duralde XA. Posterior Labral Repairs of the Shoulder Among Baseball Players: Results and Outcomes With Minimum 2-Year Follow-up. Am J Sports Med 2019; 47:1687-1693. [PMID: 31084490 DOI: 10.1177/0363546519843070] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND There is a paucity of information regarding the treatment of posterior labral tears of the shoulder for baseball players. Reports regarding treatment and postoperative outcomes are more limited than its anterior and superior counterparts. PURPOSE To evaluate the clinical presentation, surgical findings, postoperative outcomes, and rate of return to sport after arthroscopic repair of posterior labral injuries of the shoulder among baseball players. STUDY DESIGN Case series; Level of evidence, 4. METHODS Retrospective review was performed of baseball players who underwent arthroscopic posterior labral repair between 2009 and 2015 by a single surgeon, with a minimum 2-year follow-up. The group was composed of 32 male patients involved in recreational (6.3%), high school (43.8%), college (31.3%), and professional (18.8%) baseball, with a mean age of 20.5 years. Patients were categorized by chief complaint, clinical findings, surgical findings, and concomitant procedures performed. Pre- and postoperative measures included pain scale, range of motion, American Shoulder and Elbow Surgeons shoulder score, return to play, and patient satisfaction. RESULTS A variety of tear patterns were identified; 32% involved 90° of the posterior superior labrum; 35% involved the posterior 180°; and 32% involved 90° of the posterior inferior labrum. The dominant mechanism of injury was throwing (34.4%). The most common chief complaint was pain (n = 25, 78%), followed by pain and instability symptoms (n = 6, 18.8%), with only 3% citing isolated sensation of instability. Magnetic resonance imaging clearly identified tear patterns in 75% of cases. American Shoulder and Elbow Surgeons scores significantly improved ( P < .0001), increasing on average 30.9 points from the preoperative mean of 65.4 to a postoperative mean of 96.3. No significant range of motion deficits were noted. Tear size and number of anchors utilized did not influence outcomes. Ninety-four percent of athletes returned to play, 61% at previous levels, and 6% did not return. Pitchers had a lower return to previous level of play than position players (41% vs 86%, P = .0113). CONCLUSION Arthroscopic treatment of posterior labral tears of baseball players was effective in improving pain and function, resulting in 94% patient satisfaction and 94% return to sport, with 61% returning to previous level of play. Patient presentation is variable, with a majority of patients citing pain rather than instability.
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Affiliation(s)
- James S Kercher
- Peachtree Orthopedics, Piedmont Hospital, Atlanta, Georgia, USA
| | - Robert P Runner
- Department of Orthopaedics, Emory University, Atlanta, Georgia, USA
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15
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Pereira FR, Gonçalves GGP, Reis DR, Rohlfs ICP, Mendonça LDM, Bittencourt NFN. COMPARISON OF GLENOHUMERAL JOINT ROTATION RANGE OF MOTION IN YOUNG ATHLETES. REV BRAS MED ESPORTE 2019. [DOI: 10.1590/1517-869220192501141465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT Introduction: Overhead-throwing athletes undergo changes in shoulder range of motion (ROM) due to sports activities, such as excessive amplitude, lateral rotation (LR) increase and medial rotation (MR) restriction. Asymmetry greater than 20° may render athletes more prone to injuries. There are similarities among sports featuring overhead throwing due to the considerable amount of movements involving maximum lateral rotation. In these sports, medial rotation (MR) restriction, excess of lateral rotation (LR) and shoulder pain are common, particularly in overhead-throwing athletes. Objective: To assess shoulder MR and LR ROM in athletes participating in different sports, considering the influence of these variables on injuries and functional performance. Methods: The rotation ROM of the glenohumeral joint was assessed in 477 young athletes, who were categorized in three sports groups: swimming, overhead-throwing and non-overhead throwing, distributed by age group. Analyses of Variance (ANOVA) were performed to verify if there were differences in MR and LR between groups and paired Student t test was used to verify differences between sides (asymmetry). Results: Youngest athletes showed significant shorter LR than the oldest, in both sides. This study demonstrated that the right side has less MR and greater LR in all groups. Conclusion: The findings showed that overhead-throwing and swimming groups have similarities in shoulder rotation ROM. Level of evidence III; Diagnostic Studies - Investigating a Diagnostic Test.
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Lin DJ, Wong TT, Kazam JK. Shoulder Injuries in the Overhead-Throwing Athlete: Epidemiology, Mechanisms of Injury, and Imaging Findings. Radiology 2018; 286:370-387. [PMID: 29356641 DOI: 10.1148/radiol.2017170481] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The unparalleled velocity achieved by overhead throwers subjects the shoulder to extreme forces, resulting in both adaptive changes and pathologic findings that can be detected at imaging. A key biomechanical principle of throwing is achieving maximum external rotation, which initially leads to adaptive changes that may result in a pathologic cascade of injuries. In addition to the well-established concepts of glenohumeral internal rotation deficit and internal impingement, osseous and soft-tissue injuries of the shoulder unique to overhead athletes are illustrated. The epidemiology and biomechanics of throwing injuries are reviewed, and examples from the authors' institutional experience with competitive, collegiate, and professional baseball players are provided to demonstrate the constellation of unique imaging findings seen in overhead throwing athletes. Given the widespread popularity of baseball, and other sports relying on overhead throwing motions at all playing levels from recreational to professional, it is important for radiologists in various practice settings to be familiar with the special mechanisms, locations, and types of shoulder injuries seen in the overhead throwing population. © RSNA, 2018.
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Affiliation(s)
- Dana J Lin
- From the Department of Radiology, New York-Presbyterian Hospital, Columbia University Medical Center, 622 W 168th St, MC-28, New York, NY 10032
| | - Tony T Wong
- From the Department of Radiology, New York-Presbyterian Hospital, Columbia University Medical Center, 622 W 168th St, MC-28, New York, NY 10032
| | - Jonathan K Kazam
- From the Department of Radiology, New York-Presbyterian Hospital, Columbia University Medical Center, 622 W 168th St, MC-28, New York, NY 10032
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18
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Schär MO, Dellenbach S, Pfirrmann CW, Raniga S, Jost B, Zumstein MA. Many Shoulder MRI Findings in Elite Professional Throwing Athletes Resolve After Retirement: A Clinical and Radiographic Study. Clin Orthop Relat Res 2018; 476:620-631. [PMID: 29408833 PMCID: PMC6260028 DOI: 10.1007/s11999.0000000000000042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Anatomic findings on MRI scans of the shoulder likely affect patients differently based on their physical demands and fitness levels. The natural history of these anatomic findings once professional overhead athletes retire remains unclear. A better understanding of what happens with these findings after retirement may influence how we manage shoulder problems in athletes. PURPOSE (1) What is the natural history of MRI-observed findings in the throwing and nonthrowing shoulders of professional European handball players after retirement from the sport? What proportion of these individuals have diagnosable findings on MRI, and do these findings disappear after retirement? (2) Do clinical findings such as Constant and Murley score and shoulder ROM change after retirement in these professional overhead athletes? METHODS The inception cohort of this series consisted of the entire Swiss National European handball team except the goalkeepers. These 30 professional players also played in the highest Swiss handball league in 2001. None of these players previously had shoulder surgery. During their career, they had a clinical assessment and bilateral shoulder MRI as part of an earlier study. We sought to evaluate the players who had retired and did not have a history of shoulder surgery, to evaluate the natural history of MRI-observed findings made in the initial study during their professional career. Of the 30 players, 10 were excluded (four continued to play professionally, four declined participation, and two had surgery after the initial study), leaving 20 (66%) for analysis at a mean of 6 years (SD, 3 years) after retirement. To gain a better understanding of the evolution of these MRI findings in the longer-term, we also evaluated 18 additional former professional European handball players who did not have any history of shoulder surgery, had all played in the highest Swiss league and for the National Team, and had terminated their career at a mean of 15 years (SD, 3 years) ago. All the subjects in both study groups (those at 6 and 15 years after retirement) underwent a detailed interview, standardized clinical examination including ROM measurements, collection of the Constant and Murley scores and the subjective shoulder value of both shoulders, and bilateral shoulder MRI. MRI findings (consisting of abnormalities and normal variations) were reported as radiographic diagnoses, independent of the potential that these findings could be considered normal variations in people in this age group. RESULTS At the initial MRI evaluation, the proportion of active professional European handballers with diagnosable MRI findings in the throwing shoulder was 19 of 20 (95%) and for the handballers with nonthrowing shoulders was 17 of 20 (85%), while 15 years after retirement, both shoulders of all subjects showed MRI findings. None of the rotator cuff tears progressed to full-thickness tears after retirement. In the throwing shoulders, we observed fewer individuals with ganglion cysts larger than 5 mm (initial followup: six of 20 [30%] versus 6 years after retirement: 0 of 20 (0%); odds ratio, 14.5; [95% CI, 0.7-283]; p = 0.044). The Constant and Murley score increased in the throwing shoulder from 93 points (SD, 6 points) at initial followup to 98 points (SD, 3 points) at a mean of 6 years after retirement (mean difference, 5 points; SD, 5 points; 95% CI, 2.5-7.4; p < 0.001), and to 97 points (SD, 3 points) at a mean of 15 years after retirement. However these differences are below the typically reported minimum clinically important difference for the Constant and Murley score, and so are unlikely to be clinically relevant. External rotation in 90° abduction remained increased in the throwing shoulder compared with the nonthrowing shoulder up to 15 years after retirement (initial followup: mean difference, 8°; p = 0.014; 15 years after retirement: mean difference, 4°; SD, 15; p = 0.026). Internal rotation remained decreased in the throwing compared with the nonthrowing shoulders (during the career: mean difference, 5° [SD, 10°], p = 0.036; 15 years after retirement: mean difference, 3° [SD, 4°], p = 0.021). CONCLUSIONS Our data suggest that findings of the throwing shoulder like partial rotator cuff tears, bony cysts and ganglions do not progress after retirement, and sometimes they resolve. Because of this and because many MRI changes correlate poorly with clinical symptoms, the indication for surgical treatment of these findings should be questioned very carefully. LEVEL OF EVIDENCE Level II, prognostic study.
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Affiliation(s)
- Michael O. Schär
- Department of Orthopaedic Surgery and Traumatology, University of Bern, Inselspital, Bern, Switzerland
| | - Simone Dellenbach
- Department of Orthopaedic Surgery and Traumatology, University of Bern, Inselspital, Bern, Switzerland
| | - Christian W. Pfirrmann
- Department of Radiology, University of Zurich, Balgrist, Zurich, Switzerland, and the Department of Orthopaedic Surgery and Traumatology, Kantonsspital St. Gallen, Switzerland
| | - Sumit Raniga
- Department of Orthopaedic Surgery and Traumatology, University of Bern, Inselspital, Bern, Switzerland
| | - Bernhard Jost
- Department of Orthopaedics and Traumatology, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Matthias A. Zumstein
- Department of Orthopaedic Surgery and Traumatology, University of Bern, Inselspital, Bern, Switzerland
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Lubiatowski P, Kaczmarek P, Cisowski P, Breborowicz E, Grygorowicz M, Dzianach M, Krupecki T, Laver L, Romanowski L. Rotational glenohumeral adaptations are associated with shoulder pathology in professional male handball players. Knee Surg Sports Traumatol Arthrosc 2018; 26:67-75. [PMID: 28197695 DOI: 10.1007/s00167-017-4426-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 01/03/2017] [Indexed: 11/30/2022]
Abstract
PURPOSE Glenohumeral range of motion adaptations may affect throwing athletes and contribute to shoulder injury. The purpose of this study was to evaluate shoulder rotation deficits among elite professional handball players and its correlation to the presence of shoulder pain and morphological changes. METHODS Eighty-seven elite professional handball players and 41 healthy non-athlete volunteers participated in the study. Evaluations included measurement of range of internal and external rotation, total arch of motion, identification of shoulder pain and ultrasound scan for diagnosis of rotator cuff tears and internal impingement. RESULTS Glenohumeral rotational deficits (>20-25°) were found among 11 players group (13%). The throwing shoulders in the players group showed a decrease in internal rotation and an increase in external rotation with significantly larger ranges among players compared to the non-athlete group. Internal rotation deficit >20° was associated with higher incidence of shoulder pain among players. Both internal rotation deficits (>25°) and total arch of motion deficit (>20°) co-existed with higher incidence of internal impingement. Shoulder pain was common (36/97-41%) and was associated with decreased external rotation and total arch of motion. Internal impingement (found in 13/87-15%) correlated with decreased rotation ranges and a greater deficit in total arch of motion, whereas higher gain in external rotation correlated with a partial rotator cuff tear (found in 12/87-14%). CONCLUSIONS Shoulder pathologies and problems commonly affected the group of handball players. Greater glenohumeral rotational deficits in throwing shoulders of handball players correlate with shoulder pain and internal impingement, while increased external rotation with partial rotator cuff tears. Such deficits affect 13% of the athlete population. Major clinical relevance of the study is to monitor handball players' shoulders both clinically and by proper imaging. Evaluation of range of rotation seems to identify shoulders at risk of the pathology. LEVEL OF EVIDENCE Cross-Sectional study with control group, Level II.
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Affiliation(s)
- Przemyslaw Lubiatowski
- Department of Traumatology, Orthopaedics and Hand Surgery, University of Medical Sciences in Poznan, ul. 28 Czerwca 1956r 135, 62-545, Poznań, Poland. .,Rehasport Clinic, ul. Górecka 20, 60-201, Poznań, Poland.
| | | | - Pawel Cisowski
- Rehasport Clinic, ul. Górecka 20, 60-201, Poznań, Poland
| | - Ewa Breborowicz
- Department of Traumatology, Orthopaedics and Hand Surgery, University of Medical Sciences in Poznan, ul. 28 Czerwca 1956r 135, 62-545, Poznań, Poland
| | | | | | | | - Lior Laver
- Department of Orthopaediscs, University Hospital Coventry and Warwickshire, Clifford Bridge Rd, Coventry, CV2 2DX, UK
| | - Leszek Romanowski
- Department of Traumatology, Orthopaedics and Hand Surgery, University of Medical Sciences in Poznan, ul. 28 Czerwca 1956r 135, 62-545, Poznań, Poland
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20
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Shah SR, Horsley I, Rolf CG. Anterior internal impingement of the shoulder in rugby players and other overhead athletes. ASIA-PACIFIC JOURNAL OF SPORT MEDICINE ARTHROSCOPY REHABILITATION AND TECHNOLOGY 2017; 8:13-17. [PMID: 29264274 PMCID: PMC5721917 DOI: 10.1016/j.asmart.2016.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 11/16/2016] [Accepted: 11/17/2016] [Indexed: 12/19/2022]
Abstract
Background/Objective Impingement syndromes are a common cause of shoulder pain in overhead athletes. Anterior internal impingement is a recently suggested mechanism for activity-related pain of the shoulder. Impingement syndromes were initially described to occur due to repetitive or excessive contact between the rotator cuff and other structures in the shoulder. Methods This is a retrospective, clinical case study reporting 54 consecutive cases of anterior internal impingement in overhead athletes, of which 28 (51.2%) cases were of rugby players. All had undergone physiotherapy without relief of the symptoms. Of 54, there were 45 male and 9 female patients with an average age of 27 years (range, 17–51). The mean duration from injury to surgery was 40.7 weeks (range, 5–364). Of the 54 patients, 29 (53.7%) were full-time professional and 25 (46.3%) were semiprofessional or recreational athletes. The players associated the onset of pain occurred following an injury in 29/54 cases (53.4%), whereas in the remaining 25 cases (46.2%), a gradual onset of symptoms was described. All 54 patients could demonstrate a “functional impingement sign” in positioning their arm and provoke pain. Result On examination, the examiner could reproduce the same pain in 38/54 (70.3%) patients only. Of the 54 patients, “SLAP tests” including O’Brien’s test, Palm up test, and compression rotation test were positive in shoulders of 39 (72.2 %) patients, Jobe’s test in 27 (50%), Gerber’s lift off test in 6 (11%), and Hawkin’s test in 6 (11%) patients. During arthroscopic assessment, impinging flap tears were found in 44 (81.4%) patients from the SLAP, whereas undersurface rotator cuff flap tears were found in 24 (44.4%), flap tears from the anterior or inferior labrum were found in 16 (29.6%), and distal subscapularis flap tears were found in 10 (18.5%) patients. Only in 12/54 patients (22.2%) was an isolated pathology found, in all cases SLAP tears. Treatment included vaporisation and excision of the impinging flaps. In 15/54 (27.7%) patients, repair of an unstable SLAP tear was undertaken using absorbable suture anchors and fibre wires. All athletes returned to their previous activity level within 17.2 weeks (range, 6–36) from surgery and were discharged when they claimed that they were symptom free. Conclusion This series of anterior internal impingement, which we believe is the largest in the literature to date, demonstrates the value of an to assess and successfully treat overhead athletes with anterior impingement syndrome.
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Affiliation(s)
| | - Ian Horsley
- English Institute of Sport, Wakefield, UK.,Back In Action Rehabilitation, Wakefield, UK
| | - Christer G Rolf
- Department of Orthopaedics, CLINTEC, Karolinska University Hospital, Stockholm, Sweden
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21
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Pathologies of the shoulder and elbow affecting the overhead throwing athlete. Skeletal Radiol 2017; 46:873-888. [PMID: 28299434 DOI: 10.1007/s00256-017-2627-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 03/02/2017] [Accepted: 03/05/2017] [Indexed: 02/08/2023]
Abstract
The overhead-throwing athlete is susceptible to a variety of predictable disease entities affecting the shoulder and elbow. While the pathophysiology and nomenclature of these diseases are ubiquitous throughout the clinical literature, this information is sparse within the radiology domain. We provide a comprehensive review of these unique injuries with accompanying imaging features in an effort to enhance the role of the radiologist during the management of the overhead thrower. When appropriately recognized and described, the imaging features aid in establishing a diagnosis and ultimately the implementation of appropriate clinical management.
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Tsui SSM, Leong HT, Leung VYF, Ying M, Fu SN. Tendon vascularity in overhead athletes with subacromial pain syndrome and its correlation with the resting subacromial space. J Shoulder Elbow Surg 2017; 26:774-780. [PMID: 28081996 DOI: 10.1016/j.jse.2016.09.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 09/08/2016] [Accepted: 09/27/2016] [Indexed: 02/01/2023]
Abstract
BACKGROUND Supraspinatus tendinopathy is one of the common causes of subacromial pain syndrome (SAPS) in overhead athletes. Changes in tendon vascularity have been reported in painful tendons; however, the prevalence and distribution have not been investigated in young overhead athletes. METHODS We conducted a cross-sectional study of 47 overhead athletes (male, 31; female, 16) aged 18 to 36 years with SAPS for >3 months. A sonographer graded the severity of the tendinopathy and area of vascularization. Ultrasound imaging was used to measure supraspinatus tendon thickness, vascularity, and resting subacromial space. A self-written program was used to semiquantify the intensity of vascularity, expressed as the vascular index. RESULTS The majority (87.2%) of the participants had signs of tendinopathy in the supraspinatus tendon, and 40 (85.1%) of the tendinopathic tendons had vascularity. The majority (66.0%) of the vascularized subjects presented with minimal increase in vascularity, and 19.1% had moderate to severe vascularization. Most (79.2%) of the vascularization was observed in the pericortical region. The vascular index was negatively correlated with the resting subacromial space in male athletes with a reduced subacromial space (ρ = -0.63; P = .038). CONCLUSION Of overhead athletes with SAPS, 87.2% had supraspinatus tendinopathy with minimal to moderate vascularization, with the majority of vascularization occurring in the pericortical region. In male athletes with a reduced subacromial space, greater vascularity in the supraspinatus tendon was associated with a smaller resting subacromial space.
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Affiliation(s)
- Sammi Sin Mei Tsui
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Hong Kong (SAR), China
| | - Hio Teng Leong
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Hong Kong (SAR), China
| | - Vivian Yee Fong Leung
- Department of Radiology and Imaging, Prince of Wales Hospital, Shatin, Hong Kong (SAR), China
| | - Michael Ying
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong (SAR), China
| | - Siu Ngor Fu
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Hong Kong (SAR), China.
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Abstract
The overhead pitching motion is a coordinated sequence of movements that subjects the shoulder to extreme forces. The ultimate goal of this complex, dynamic activity is to generate high ball velocity and accuracy. In doing so, repetitive throwing can cause adaptive and pathologic changes in the thrower's shoulder. This article reviews the relevant shoulder anatomy, the kinetic chain, and throwing mechanics, as well as common shoulder injuries and surgical options for the treating orthopedic surgeon.
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Affiliation(s)
- Ryan A Mlynarek
- Department of Orthopaedic Surgery, University of Michigan, 2912 Taubman Center, Ann Arbor, MI 48109-5328, USA
| | - Simon Lee
- Department of Orthopaedic Surgery, University of Michigan, 2912 Taubman Center, Ann Arbor, MI 48109-5328, USA
| | - Asheesh Bedi
- Department of Orthopaedic Surgery, Shoulder and Sports Medicine, University of Michigan, 24 Frank Lloyd Wright Drive, Lobby A, Suite 1000, Ann Arbor, MI 48106, USA.
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Abstract
Upper extremity tennis injuries are most commonly characterized as overuse injuries to the wrist, elbow, and shoulder. The complex anatomy of these structures and their interaction with biomechanical properties of tennis strokes contributes to the diagnostic challenges. A thorough understanding of tennis kinetics, in combination with the current literature surrounding diagnostic and treatment methods, will improve clinical decision-making.
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Affiliation(s)
- Kevin C Chung
- Section of Plastic Surgery, University of Michigan Medical School, University of Michigan Health System, 2130 Taubman Center, SPC 5340, 1500 East Medical Center Drive, Ann Arbor, MI 48109-5340, USA.
| | - Meghan E Lark
- Section of Plastic Surgery, Department of Surgery, University of Michigan Health System, Ann Arbor, MI, USA
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Corpus KT, Camp CL, Dines DM, Altchek DW, Dines JS. Evaluation and treatment of internal impingement of the shoulder in overhead athletes. World J Orthop 2016; 7:776-784. [PMID: 28032029 PMCID: PMC5155252 DOI: 10.5312/wjo.v7.i12.776] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 10/09/2016] [Indexed: 02/06/2023] Open
Abstract
One of the most common pathologic processes seen in overhead throwing athletes is posterior shoulder pain resulting from internal impingement. “Internal impingement” is a term used to describe a constellation of symptoms which result from the greater tuberosity of the humerus and the articular surface of the rotator cuff abutting the posterosuperior glenoid when the shoulder is in an abducted and externally rotated position. The pathophysiology in symptomatic internal impingement is multifactorial, involving physiologic shoulder remodeling, posterior capsular contracture, and scapular dyskinesis. Throwers with internal impingement may complain of shoulder stiffness or the need for a prolonged warm-up, decline in performance, or posterior shoulder pain. On physical examination, patients will demonstrate limited internal rotation and posterior shoulder pain with a posterior impingement test. Common imaging findings include the classic “Bennett lesion” on radiographs, as well as articular-sided partial rotator cuff tears and concomitant SLAP lesions. Mainstays of treatment include intense non-operative management focusing on rest and stretching protocols focusing on the posterior capsule. Operative management is variable depending on the exact pathology, but largely consists of rotator cuff debridement. Outcomes of operative treatment have been mixed, therefore intense non-operative treatment should remain the focus of treatment.
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27
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Abstract
Repetitive, high-velocity overhead throwing can lead to several adaptive changes in the throwing shoulder, which over time lead to structural microtrauma and eventually overt injury. MR imaging is a useful imaging modality to evaluate these changes and to characterize their acuity and severity. Understanding the throwing motion and the effects of this motion on the structures of the shoulder can help radiologists to recognize these findings and provide useful information to referring physicians, which may affect the treatment of these athletes. This article reviews shoulder pathomechanics and MR imaging findings in overhead throwing athletes.
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Abstract
CLINICAL/METHODICAL ISSUE Shoulder impingement syndrome is a clinically common entity involving trapping of tendons or bursa with typical clinical findings. STANDARD RADIOLOGICAL METHODS Important radiological procedures are ultrasound, magnetic resonance imaging (MRI) and MR arthrography. Projection radiography and computed tomography (CT) are ideal to identify bony changes and CT arthrography also serves as an alternative method in cases of contraindications for MRI. These modalities support the clinically suspected diagnosis of impingement syndrome and may identify its cause in primary diagnosis. In addition, effects of impingement are determined by imaging. Therapy decisions are based on a synopsis of radiological and clinical findings. PERFORMANCE The sensitivity and specificity of these imaging modalities with regard to the diagnostics of a clinically evident impingement syndrome are given in this review article. PRACTICAL RECOMMENDATIONS Orthopedic and trauma surgeons express the suspicion of an impingement syndrome based on patient history and physical examination and radiologists confirm structural changes and damage of intra-articular structures using dedicated imaging techniques.
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Affiliation(s)
- J K Kloth
- Klinik für diagnostische und interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland,
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Johansson FR, Skillgate E, Adolfsson A, Jenner G, DeBri E, Swärdh L, Cools AM. Asymptomatic Elite Adolescent Tennis Players' Signs of Tendinosis in Their Dominant Shoulder Compared With Their Nondominant Shoulder. J Athl Train 2015; 50:1299-305. [PMID: 26651279 PMCID: PMC4741256 DOI: 10.4085/1062-6050-51.1.07] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
CONTEXT Tennis is an asymmetric overhead sport with specific muscle-activation patterns, especially eccentrically in the rotator cuff. Magnetic resonance imaging (MRI) findings in asymptomatic adolescent elite tennis players have not previously been reported. OBJECTIVE The first aim of the study was to describe MRI findings regarding adaptations or abnormalities, as well as muscle cross-sectional area (CSA), of the rotator cuff. The second aim of the study was to investigate the rotator cuff based on the interpretation of the MRI scans as normal versus abnormal, with the subdivision based on the grade of tendinosis, and its association with eccentric rotator cuff strength in the dominant arm (DA) of the asymptomatic elite adolescent tennis player. SETTING Testing environment at the radiology department of Medicinsk Röntgen AB. PATIENTS OR OTHER PARTICIPANTS Thirty-five asymptomatic elite tennis players (age = 17.4 ± 2.7 years) were selected based on ranking and exposure time. INTERVENTION(S) We assessed MRI scans and measured the CSA of the rotator cuff muscle. The non-DA (NDA) was used as a control. In addition, eccentric testing of the external rotators of the DA was performed with a handheld dynamometer. RESULTS The DA and NDA displayed different frequencies of infraspinatus tendinosis (grade 1 changes) (P < .05). Rotator cuff measurements revealed larger infraspinatus and teres minor CSA (P < .05) in the DA than in the NDA. Mean eccentric external-rotation strength in the DA stratified by normal tendon and tendinosis was not different between groups (P = .723). CONCLUSIONS Asymptomatic adolescent elite tennis players demonstrated infraspinatus tendinosis more frequently in the DA than in the NDA. Clinicians must recognize these tendon changes in order to modify conditioning and performance programs appropriately.
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Affiliation(s)
- Fredrik R. Johansson
- Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Belgium
| | - Eva Skillgate
- Institute of Environmental Medicine, Stockholm, Sweden
| | | | - Göran Jenner
- Medicinsk Röntgen AB Hötorget, Stockholm, Sweden
| | | | - Leif Swärdh
- OrthoCenter/IFK kliniken, Gothenburg, Sweden
| | - Ann M. Cools
- Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Belgium
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Stress Distribution in Superior Labral Complex and Rotator Cuff During In Vivo Shoulder Motion: A Finite Element Analysis. Arthroscopy 2015; 31:2073-81. [PMID: 26051355 DOI: 10.1016/j.arthro.2015.04.082] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 03/23/2015] [Accepted: 04/10/2015] [Indexed: 02/02/2023]
Abstract
PURPOSE To quantitatively and qualitatively evaluate the impingement behavior between structures within the glenohumeral joint under simulated abduction-external rotation (ABER) motion using finite element analysis. METHODS Computed tomography (CT) scanning of 1 shoulder in a volunteer was performed at 0° and 120° of shoulder abduction with external rotation (ABER position), followed by magnetic resonance imaging at 0° of abduction. The CT and magnetic resonance images were then imported into a customized software program to undergo 3-dimensional reconstruction followed by finite element modeling of the bone and soft tissue including the upper part of the rotator cuff and glenohumeral labral complex. Glenohumeral motion from 0° to the ABER position was simulated by CT images in 2 different humeral positions. On the basis of simulated humeral motion with respect to the scapula, we measured the stress value on the biceps-labral complex and upper part of the rotator cuff as a consequence of their structural deformation. In addition, we intended to design 2 types of labra--a normal stable labrum and an unstable posterosuperior labrum--to evaluate the geometric alteration and resulting stress change on the posterosuperior labrum against a compressive force from the humeral head and rotator cuff. RESULTS In the ABER position, the posterosuperior labrum was deformed by the humeral head and interposed posterior part of the rotator cuff. When viewed from the rotator cuff, the posterior part of the rotator cuff came into contact with the posterosuperior labrum as external rotation increased. The measured peak contact stress values were 19.7 MPa and 23.5 MPa for the posterosuperior labrum and the upper rotator cuff, respectively. The stress values for both structures decreased to 5.8 MPa and 18.1 MPa, respectively, in the simulated SLAP model. The root of the long head of the biceps became compressed halfway through the range of motion by the humeral head, especially from the part involving horizontal extension and external rotation, resulting in a high stress of 22.4 MPa. CONCLUSIONS In this simulated SLAP model, the posterosuperior labrum was medially displaced by the humeral head and upper rotator cuff in the ABER position, causing a functional loss of the spacer effect. CLINICAL RELEVANCE In SLAP lesions, the posterosuperior labrum loses its ability to function as a spacer in certain positions (especially ABER) and may decrease the important spacer effect between the humerus and the rotator cuff; this may lead to posterosuperior subluxation of the humeral head or rotator cuff abnormalities and tears during repetitive ABER tasks.
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Abstract
Tennis places high loads on the joints of players, with supraphysiologic forces being generated at the shoulder and elbow hundreds of times per match. Acute injuries tend to affect the lower extremity; chronic injuries usually involve the upper extremity. Commonly encountered upper extremity conditions include rotator cuff injury, internal impingement, superior labral tears, and epicondylitis of the elbow. Serving is the most strenuous stroke in tennis, with the highest peak muscle activity in the shoulder and forearm occurring during this stroke. The kinetic chain links upper extremity, lower extremity, and core muscle segments by transmitting coordinated activation and motion; in this regard, any pathologic process that disturbs the groin, hip, and abdominal musculature can further result in an increased risk of injury to the shoulder and upper extremity. Evolution in equipment and in play surfaces has also affected the type and frequency of injuries. Prevention programs that address the muscular imbalances throughout the kinetic chain may help reduce the incidence of both acute and chronic injuries experienced by tennis athletes.
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Mihata T, Gates J, McGarry MH, Neo M, Lee TQ. Effect of posterior shoulder tightness on internal impingement in a cadaveric model of throwing. Knee Surg Sports Traumatol Arthrosc 2015; 23:548-54. [PMID: 23322267 DOI: 10.1007/s00167-013-2381-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 01/04/2013] [Indexed: 10/27/2022]
Abstract
PURPOSE Posterior shoulder tightness is common in throwing athletes, especially those with symptomatic shoulder internal impingement. The role of posteroinferior capsular contracture in the pathoetiologies of throwing-related injuries caused by shoulder internal impingement remains unclear. The purpose of this study was to assess effect of posterior shoulder tightness on internal impingement in a cadaveric model of throwing. METHODS Seven fresh-frozen cadaveric shoulders were tested with the shoulder abducted to 90° and at maximum external rotation to simulate the late cocking phase of throwing motion. Glenohumeral joint contact pressure and area through internal impingement, humeral head shift, and the maximum humeral rotation angle were measured. Posteroinferior capsular plication was performed to simulate posteroinferior capsular tightness and induce glenohumeral internal rotation deficit. RESULTS Following generation of simulated posteroinferior capsular tightness with resultant glenohumeral internal rotation deficit, glenohumeral contact pressure was significantly increased (P < 0.05), the impinged area of rotator cuff tendon was significantly decreased (P < 0.05), and the humeral head shifted posteriorly (P < 0.05) during shoulder internal impingement. CONCLUSION Excessive posteroinferior capsular tightness can cause forceful internal impingement of the shoulder at maximum external rotation position.
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Affiliation(s)
- Teruhisa Mihata
- Department of Orthopedic Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka, 569-8686, Japan,
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Fessa CK, Peduto A, Linklater J, Tirman P. Posterosuperior glenoid internal impingement of the shoulder in the overhead athlete: Pathogenesis, clinical features and MR imaging findings. J Med Imaging Radiat Oncol 2015; 59:182-7. [DOI: 10.1111/1754-9485.12276] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 11/25/2014] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | - Phillip Tirman
- Renaissance Imaging Medical Associates; Northridge California USA
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35
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Garbis NG, McFarland EG. Understanding and evaluating shoulder pain in the throwing athlete. Phys Med Rehabil Clin N Am 2014; 25:735-61. [PMID: 25442157 DOI: 10.1016/j.pmr.2014.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Shoulder pain in the throwing athlete can present at any age and in any level of sport and can lead to dysfunction. A thorough evaluation of the throwing athlete can often determine the cause of symptoms, which is frequently multifactorial. Although the pathophysiology leading to pain in the shoulder of the throwing athlete is not entirely known, nonoperative modalities remain the mainstay of treatment. In general, surgical intervention should be reserved as a last resort. Effective treatment often requires collaboration among trainers, players, physicians, and therapists to determine an appropriate course of action.
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Affiliation(s)
- Nickolas G Garbis
- Department of Orthopaedic Surgery and Rehabilitation, Loyola University, 2160 South 1st Avenue, Maywood, IL 60153, USA
| | - Edward G McFarland
- Division of Shoulder Surgery, Department of Orthopaedic Surgery, The Johns Hopkins University, 601 North Caroline Street, Baltimore, MD 21287, USA.
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Lädermann A, Chagué S, Kolo FC, Charbonnier C. Kinematics of the shoulder joint in tennis players. J Sci Med Sport 2014; 19:56-63. [PMID: 25481481 DOI: 10.1016/j.jsams.2014.11.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 10/19/2014] [Accepted: 11/07/2014] [Indexed: 01/26/2023]
Abstract
OBJECTIVES Shoulder pain and injury are common in tennis players. The precise causes for such pain remain unclear. Impingement at critical tennis positions and glenohumeral instability have never been dynamically evaluated in vivo. The purpose of this study was to evaluate the different types of impingement and stability during tennis movements. DESIGN Laboratory study. METHODS Type and frequency of impingement as well as percentage of subluxation were evaluated in 10 tennis players through a novel dedicated patient-specific measurement technique based on optical motion capture and Magnetic Resonance Imaging (MRI). RESULTS All volunteers, nine male and one female, had a clinically functional rotator cuff. MRI revealed 11 rotator cuff lesions in six subjects and six labral lesions in five subjects. Lateral subacromial, anterior subacromial, internal anterosuperior, and internal posterosuperior impingements were observed in four, three, two and seven subjects, respectively. No instability could be demonstrated in this population. CONCLUSIONS Tennis players presented frequent radiographic signs of structural lesions that could mainly be related to posterosuperior impingements due to repetitive abnormal motion contacts. This is the first study demonstrating that a dynamic and precise motion analysis of the entire kinematic chain of the shoulder is possible through a non-invasive method of investigation. This premier kinematic observation offers novel insights into the analysis of shoulder impingement and instability that could, with future studies, be generalized to other shoulder pathologies and sports. This original method may open new horizons leading to improvement in impingement comprehension.
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Affiliation(s)
- A Lädermann
- Division of Orthopaedics and Trauma Surgery, La Tour Hospital, Switzerland; Faculty of Medicine, University of Geneva, Switzerland.
| | - S Chagué
- Artanim Foundation, Medical Research Department, Switzerland
| | - F C Kolo
- Rive Droite Radiology Center, Switzerland
| | - C Charbonnier
- Artanim Foundation, Medical Research Department, Switzerland
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Abstract
Throwers, or athletes who engage in repetitive overhead motions, are a unique subset of athletes that experience distinct shoulder injuries. Athletes engaged in baseball comprise the majority of patients seeking orthopedic care for throwing related injuries. Injuries specific to throwers most commonly involve the labrum and the undersurface of the rotator cuff. In addition, tissue changes in both the anterior and posterior glenohumeral capsule are common with repetitive overhead motions. These capsular changes alter. This article will examine the pathomechanics of injuries to throwers, elaborate means of diagnoses of cuff and labral injury and discuss recent advances in both non-operative and operative interventions, including preventative principles.
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Affiliation(s)
- Stuart D Kinsella
- Department of Orthopaedic Surgery, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA
| | - Stephen J Thomas
- Division of Nursing and Health Sciences, Neumann University, 1 Neumann Drive, Aston, PA 19104, USA
| | - G Russell Huffman
- Department of Orthopaedic Surgery, Hospital of the University of Pennsylvania, 34th and Spruce Street, Philadelphia, PA 19104, USA
| | - John D Kelly
- Department of Orthopaedic Surgery, Hospital of the University of Pennsylvania, 34th and Spruce Street, Philadelphia, PA 19104, USA.
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39
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Klein M, Tarantino I, Warschkow R, Berger CJ, Zdravkovic V, Jost B, Badulescu M. Specific Shoulder Pathoanatomy in Semiprofessional Water Polo Players: A Magnetic Resonance Imaging Study. Orthop J Sports Med 2014; 2:2325967114531213. [PMID: 26535326 PMCID: PMC4555536 DOI: 10.1177/2325967114531213] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Shoulders of throwing and swimming athletes are highly stressed joints that often show structural abnormalities on magnetic resonance imaging (MRI). However, while water polo players exhibit a combination of throwing and swimming movements, a specific pattern of pathological findings has not been described. PURPOSE To assess specific MRI abnormalities in shoulders of elite water polo players and to compare these findings with a healthy control group. STUDY DESIGN Cross-sectional study; Level of evidence, 3. METHODS After performing a power analysis, volunteers were recruited for this study. Both shoulders of 28 semiprofessional water polo players and 15 healthy volunteers were assessed clinically (based on the Constant score) and had bilateral shoulder MRIs. The shoulders were clustered into 3 groups: 28 throwing and 28 nonthrowing shoulders of water polo athletes and 30 shoulders of healthy control subjects. RESULTS Twenty-eight male water polo players with an average age of 24 years and 15 healthy subjects (30 shoulders) with an average age of 31 years were examined. Compared with controls, significantly more MRI abnormalities in the water polo players' throwing shoulders could be found in the subscapularis, infraspinatus, and posterior labrum (P = .001, P = .024, and P = .041, respectively). Other structures showed no statistical differences between the 3 groups, including the supraspinatus tendon, which had abnormalities in 36% of throwing versus 32% of nonthrowing shoulders and 33% of control shoulders. All throwing shoulders showed abnormal findings in the MRI, but only 8 (29%) were symptomatic. CONCLUSION The shoulders of semiprofessional water polo players demonstrated abnormalities in subscapularis and infraspinatus tendons that were not typical abnormalities for swimmers or throwing athletes. CLINICAL RELEVANCE The throwing shoulders of water polo players have specific MRI changes. Clinical symptoms do not correlate with the MRI findings.
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Affiliation(s)
- Maria Klein
- Department of Orthopaedic Surgery, Universitätsspital Basel, Basel, Switzerland
| | - Ignazio Tarantino
- Department of Surgery, Kantonsspital St Gallen, St Gallen, Switzerland
| | - René Warschkow
- Department of Surgery, Kantonsspital St Gallen, St Gallen, Switzerland
| | | | - Vilijam Zdravkovic
- Department of Orthopaedics and Traumatology, Kantonsspital St Gallen, St Gallen, Switzerland
| | - Bernhard Jost
- Department of Orthopaedics and Traumatology, Kantonsspital St Gallen, St Gallen, Switzerland
| | - Michael Badulescu
- Department of Orthopaedics and Traumatology, Kantonsspital St Gallen, St Gallen, Switzerland
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Kuhn JE. Current concepts: rotator cuff pathology in athletes--a source of pain or adaptive pathology? Curr Sports Med Rep 2014; 12:311-5. [PMID: 24030304 DOI: 10.1249/jsr.0000000000000000] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Magnetic resonance imaging (MRI) findings are common in patients and athletes with shoulder pain. Historically these anatomic derangements have been thought to be the source of the patient's symptoms, and approaches have been focused on restoring the anatomy. This manuscript will address three objectives: (1) suggest that the approach to rotator cuff disease should be based on the patient's history and physical examination, and not necessarily on the anatomic disorders apparent on imaging; (2) review the data that supports the contention that rotator cuff disease is not the source of pain in the symptomatic shoulder, and (3) describe the concept of adaptive pathology. The findings on the MRI in the thrower's painful shoulder may be adaptive, and these alterations may be required to allow performance at high levels in sport.
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Affiliation(s)
- John E Kuhn
- Vanderbilt University Medical Center, Nashville, TN
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Harris JD, Frank JM, Jordan MA, Bush-Joseph CA, Romeo AA, Gupta AK, Abrams GD, McCormick FM, Bach BR. Return to sport following shoulder surgery in the elite pitcher: a systematic review. Sports Health 2014; 5:367-76. [PMID: 24459557 PMCID: PMC3899910 DOI: 10.1177/1941738113482673] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Context: The ability to return to elite pitching, performance, and clinical outcomes of shoulder surgery in elite baseball pitchers are not definitively established. Objective: To determine (1) the rate of return to sport (RTS) in elite pitchers following shoulder surgery, (2) postoperative clinical outcomes upon RTS, and (3) performance upon RTS and to compare RTS rates in different types of shoulder surgery. Data Sources: Using Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and checklist, Medline, SciVerse Scopus, SportDiscus, and Cochrane Central Register of Controlled Trials were searched. Study Selection: Levels I-IV evidence were eligible for inclusion if performance-based (eg, RTS) and/or clinical outcome–based reporting of outcomes were reported following surgical treatment of shoulder pathology in elite pitchers (major or minor league or collegiate). Data Extraction: Subject, shoulder, and pre- and postoperative performance-based variables of interest were extracted. All shoulder surgery types were potentially inclusive (eg, open, arthroscopic, rotator cuff, labrum, biceps, acromioclavicular joint, fracture). Study methodological quality was analyzed using the Modified Coleman Methodology Score (MCMS). Results: Six studies were analyzed (287 elite male pitchers [mean age, 27 years] who underwent shoulder surgery, with 99% on the dominant, throwing shoulder). MCMS was 38 (poor). Most pitchers were professional, with a mean career length of 6.58 years and postoperative clinical follow-up of 3.62 years. In 5 of 6 studies, multiple diagnoses were addressed concomitantly at surgery. Rate of RTS was 68% at mean 12 months following surgery. Twenty-two percent of Major League Baseball (MLB) pitchers never RTS in MLB. Overall performance did improve following surgery; however, this did not improve to pre-injury levels. Conclusion: In this systematic review, the rate of return to elite baseball pitching following surgery was established. Performance tended to decrease prior to surgery and gradually improve postoperatively, though not reaching pre-injury levels of pitching. Level of Evidence: IV (systematic review of studies level I-IV evidence), therapeutic.
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Affiliation(s)
- Joshua D Harris
- Division of Sports Medicine, Department of Orthopedic Surgery, Rush Medical College of Rush University, Rush University Medical Center, Chicago, Illinois
| | - Jonathan M Frank
- Division of Sports Medicine, Department of Orthopedic Surgery, Rush Medical College of Rush University, Rush University Medical Center, Chicago, Illinois
| | - Mark A Jordan
- Division of Sports Medicine, Department of Orthopedic Surgery, Rush Medical College of Rush University, Rush University Medical Center, Chicago, Illinois
| | - Charles A Bush-Joseph
- Division of Sports Medicine, Department of Orthopedic Surgery, Rush Medical College of Rush University, Rush University Medical Center, Chicago, Illinois
| | - Anthony A Romeo
- Division of Sports Medicine, Department of Orthopedic Surgery, Rush Medical College of Rush University, Rush University Medical Center, Chicago, Illinois
| | - Anil K Gupta
- Division of Sports Medicine, Department of Orthopedic Surgery, Rush Medical College of Rush University, Rush University Medical Center, Chicago, Illinois
| | - Geoffrey D Abrams
- Division of Sports Medicine, Department of Orthopedic Surgery, Rush Medical College of Rush University, Rush University Medical Center, Chicago, Illinois
| | - Frank M McCormick
- Division of Sports Medicine, Department of Orthopedic Surgery, Rush Medical College of Rush University, Rush University Medical Center, Chicago, Illinois
| | - Bernard R Bach
- Division of Sports Medicine, Department of Orthopedic Surgery, Rush Medical College of Rush University, Rush University Medical Center, Chicago, Illinois
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Dashe J, Roocroft JH, Bastrom TP, Edmonds EW. Spectrum of shoulder injuries in skeletally immature patients. Orthop Clin North Am 2013; 44:541-51. [PMID: 24095070 DOI: 10.1016/j.ocl.2013.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This article evaluates the spectrum of epidemiology and treatment of children presenting with shoulder pain. These injuries are discussed to further understand the mechanism of injury, the variation of these injuries with age, treatment options, and outcomes and complications that may arise. A retrospective clinical review was performed to compliment the findings of the literature review.
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Affiliation(s)
- Jesse Dashe
- University of California, 9500 Gilman Drive, La Jolla, CA 92093, USA
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Abstract
A complex interplay exists between the static and dynamic stabilizers in the glenohumeral joint, especially in overheard athletes who need a shoulder hypermobile enough to perform overhead activity yet stable enough to prevent joint subluxation. Concomitant shoulder pathologies commonly occur in the setting of microinstability and internal impingement. Before any surgical intervention, a 3- to 6-month course of conservative measures should first be attempted, with exercises focused on rotator cuff and scapular stabilizer strengthening combined with posterior capsule stretching. If surgery is needed, arthroscopic suture plication with treatment of concomitant lesions has been shown to provide the best clinical outcomes.
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Hanchard NCA, Lenza M, Handoll HHG, Takwoingi Y. Physical tests for shoulder impingements and local lesions of bursa, tendon or labrum that may accompany impingement. Cochrane Database Syst Rev 2013; 2013:CD007427. [PMID: 23633343 PMCID: PMC6464770 DOI: 10.1002/14651858.cd007427.pub2] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Impingement is a common cause of shoulder pain. Impingement mechanisms may occur subacromially (under the coraco-acromial arch) or internally (within the shoulder joint), and a number of secondary pathologies may be associated. These include subacromial-subdeltoid bursitis (inflammation of the subacromial portion of the bursa, the subdeltoid portion, or both), tendinopathy or tears affecting the rotator cuff or the long head of biceps tendon, and glenoid labral damage. Accurate diagnosis based on physical tests would facilitate early optimisation of the clinical management approach. Most people with shoulder pain are diagnosed and managed in the primary care setting. OBJECTIVES To evaluate the diagnostic accuracy of physical tests for shoulder impingements (subacromial or internal) or local lesions of bursa, rotator cuff or labrum that may accompany impingement, in people whose symptoms and/or history suggest any of these disorders. SEARCH METHODS We searched electronic databases for primary studies in two stages. In the first stage, we searched MEDLINE, EMBASE, CINAHL, AMED and DARE (all from inception to November 2005). In the second stage, we searched MEDLINE, EMBASE and AMED (2005 to 15 February 2010). Searches were delimited to articles written in English. SELECTION CRITERIA We considered for inclusion diagnostic test accuracy studies that directly compared the accuracy of one or more physical index tests for shoulder impingement against a reference test in any clinical setting. We considered diagnostic test accuracy studies with cross-sectional or cohort designs (retrospective or prospective), case-control studies and randomised controlled trials. DATA COLLECTION AND ANALYSIS Two pairs of review authors independently performed study selection, assessed the study quality using QUADAS, and extracted data onto a purpose-designed form, noting patient characteristics (including care setting), study design, index tests and reference standard, and the diagnostic 2 x 2 table. We presented information on sensitivities and specificities with 95% confidence intervals (95% CI) for the index tests. Meta-analysis was not performed. MAIN RESULTS We included 33 studies involving 4002 shoulders in 3852 patients. Although 28 studies were prospective, study quality was still generally poor. Mainly reflecting the use of surgery as a reference test in most studies, all but two studies were judged as not meeting the criteria for having a representative spectrum of patients. However, even these two studies only partly recruited from primary care.The target conditions assessed in the 33 studies were grouped under five main categories: subacromial or internal impingement, rotator cuff tendinopathy or tears, long head of biceps tendinopathy or tears, glenoid labral lesions and multiple undifferentiated target conditions. The majority of studies used arthroscopic surgery as the reference standard. Eight studies utilised reference standards which were potentially applicable to primary care (local anaesthesia, one study; ultrasound, three studies) or the hospital outpatient setting (magnetic resonance imaging, four studies). One study used a variety of reference standards, some applicable to primary care or the hospital outpatient setting. In two of these studies the reference standard used was acceptable for identifying the target condition, but in six it was only partially so. The studies evaluated numerous standard, modified, or combination index tests and 14 novel index tests. There were 170 target condition/index test combinations, but only six instances of any index test being performed and interpreted similarly in two studies. Only two studies of a modified empty can test for full thickness tear of the rotator cuff, and two studies of a modified anterior slide test for type II superior labrum anterior to posterior (SLAP) lesions, were clinically homogenous. Due to the limited number of studies, meta-analyses were considered inappropriate. Sensitivity and specificity estimates from each study are presented on forest plots for the 170 target condition/index test combinations grouped according to target condition. AUTHORS' CONCLUSIONS There is insufficient evidence upon which to base selection of physical tests for shoulder impingements, and local lesions of bursa, tendon or labrum that may accompany impingement, in primary care. The large body of literature revealed extreme diversity in the performance and interpretation of tests, which hinders synthesis of the evidence and/or clinical applicability.
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Affiliation(s)
- Nigel C A Hanchard
- Health and Social Care Institute, Teesside University, Middlesbrough, UK.
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Shoulder impingement revisited: evolution of diagnostic understanding in orthopedic surgery and physical therapy. Med Biol Eng Comput 2013; 52:211-9. [PMID: 23572144 DOI: 10.1007/s11517-013-1074-1] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 04/03/2013] [Indexed: 01/03/2023]
Abstract
"Impingement syndrome" is a common diagnostic label for patients presenting with shoulder pain. Historically, it was believed to be due to compression of the rotator cuff tendons beneath the acromion. It has become evident that "impingement syndrome" is not likely an isolated condition that can be easily diagnosed with clinical tests or most successfully treated surgically. Rather, it is likely a complex of conditions involving a combination of intrinsic and extrinsic factors. A mechanical impingement phenomenon as an etiologic mechanism of rotator cuff disease may be distinct from the broad diagnostic label of "impingement syndrome". Acknowledging the concepts of mechanical impingement and movement-related impairments may better suit the diagnostic and interventional continuum as they support the existence of potentially modifiable impairments within the conservative treatment paradigm. Therefore, it is advocated that the clinical diagnosis of "impingement syndrome" be eliminated as it is no more informative than the diagnosis of "anterior shoulder pain". While both terms are ambiguous, the latter is less likely to presume an anatomical tissue pathology that may be difficult to isolate either with a clinical examination or with diagnostic imaging and may prevent potentially inappropriate surgical interventions. We further recommend investigation of mechanical impingement and movement patterns as potential mechanisms for the development of shoulder pain, but clearly distinguished from a clinical diagnostic label of "impingement syndrome". For shoulder researchers, we recommend investigations of homogenous patient groups with accurately defined specific pathologies, or with subgrouping or classification based on specific movement deviations. Diagnostic labels based on the movement system may allow more effective subgrouping of patients to guide treatment strategies.
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Abstract
The cause of rotator cuff injuries in the young athlete has been described as an overuse injury related to internal impingement. Abduction coupled with external rotation is believed to impinge on the rotator cuff, specifically the supraspinatus, and lead to undersurface tears that can progress to full-thickness tears. This impingement is believed to be worsened with increased range of motion and instability in overhead athletes. A retrospective review of seven patients diagnosed with rotator cuff injuries was performed to better understand this shoulder injury pattern. The type of sport played, a history of trauma, diagnosis, treatment method, and outcome were noted. Six patients were male and one was a female. Baseball was the primary sport for four patients, basketball for one, gymnastics for one, and wrestling for one. The following injury patterns were observed: two patients tore their subscapularis tendon, two sustained avulsion fractures of their lesser tuberosity, one tore his rotator interval, one tore his supraspinatus, and one avulsed his greater tuberosity. Only four patients recalled a specific traumatic event. Three patients were treated with arthroscopic rotator cuff repair, three with miniopen repair, and one was treated with rehabilitation. Six of the seven patients returned to their preinjury level of sport after treatment. Rotator cuff tears are rare in the adolescent age group. The injury patterns suggest that acute trauma likely accounts for many rotator cuff tears and their equivalents in the young patient. Adolescents with rotator cuff tears reliably return to sports after treatment. The possibility of rotator cuff tears in skeletally immature athletes should be considered. The prognosis is very good once this injury is identified and treated.
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Abstract
With increasing levels of competition at earlier ages, young athletes are becoming more susceptible to shoulder injuries. Overuse injuries in throwers are common conditions seen in pediatric and adolescent athletes. Little League shoulder and superior labial injuries are common due to the repetitive and high rotational forces placed on the shoulder during the throwing motion. Shoulder instability as a result of traumatic events occurring in collision sports is another frequent reason for young athletes to present to a sports medicine clinic. Although no operative treatment is often the first-line treatment for most of these injuries, shoulder surgery is becoming increasingly warranted in these young patients. Advanced cross-sectional imaging is important in guiding treatment for many of these injuries.
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Shoulder Joint Position Sense in Injured and Noninjured Judo Athletes. INTERNATIONAL JOURNAL OF ATHLETIC THERAPY AND TRAINING 2013. [DOI: 10.1123/ijatt.18.2.29] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Context:A reduction in joint position sense (JPS) is sometimes a consequence of shoulder injury that may adversely affect the ability to maintain dynamic joint stability.Objective:To compare shoulder JPS between previously injured and noninjured judokas.Design:Cohort study.Participants:Twenty-nine noninjured subjects (10.93 ± 3.45 years) and eleven injured subjects (15.09 ± 3.39 years).Main Outcome Measures:JPS was tested at 45° and 80°of shoulder external rotation at 90° of abduction.Results:No signifcant difference in JPS was found between previously injured and noninjured judokas at either joint position.Conclusion:Despite evidence that JPS acuity decreases following shoulder injury, this study did not demonstrate a difference in average error between previously injured and noninjured judokas. Uncontrolled confounding factors, such as age and time since injury, may have affected the results. Sport-specifc shoulder joint loading patterns may also be an important factor that affects JPS.
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49
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Abstract
INTRODUCTION In the adult population, rotator cuff tears are common and established treatment methods yield satisfactory results. In adolescents, however, these injuries are uncommon and few treatment methods and outcome reports exist. The purpose of this study was to examine a series of adolescent rotator cuff tears, identify associated pathology, and report treatment outcomes. METHODS A retrospective comparative analysis of adolescent patients treated for rotator cuff tears diagnosed by magnetic resonance imaging (MRI) or arthroscopy between 2008 and 2010 was performed. Patients were divided by treatment rendered: nonoperative or operative. Demographic and diagnostic variables were compared between the 2 groups. After release to full activity, 3 patient outcome measures were obtained: QuickDASH (Disability of the Arm, Shoulder, and Hand), QuickDASH Sports module, and the Single Assessment Numerical Evaluation (SANE). RESULTS Fifty-three adolescents (38 boys and 15 girls) with a mean age of 15.8 years (8.8 to 18.8 y) met the inclusion criteria. All rotator cuff tears were partial articular-sided tendon avulsions, and surgical treatment (when required) consisted of debridement to stable edges. All patients underwent a trial of at least 6 weeks of physical therapy, with 57% failing to improve and requiring subsequent surgery. In the patients that were treated nonoperatively, 39% were diagnosed with associated pathology based on MRI findings, whereas operative patients exhibited an associated pathology rate of 70%. Patients with MRI-diagnosed associated pathology were 1.8 times more likely (95% confidence interval, 1.02-3.13, P=0.025) to require surgery compared with those without MRI-identified associated pathology. Nineteen patients (13 operative, 6 nonoperative) completed the outcome questionnaires at a mean 16.9 months after treatment. QuickDASH, SANE, and QuickDASH Sports module scores were not statistically different between nonoperative and operative treatment groups (7.5 vs. 8.1, P=0.90; 85.3 vs. 80.6, P=0.47; and 5.2 vs. 19.5, P=0.39, respectively). All outcome measures exhibited significant correlations with one another, with the strongest correlation being a negative association between SANE and Sports module scores (r=-0.76, P=0.001). DISCUSSION Isolated partial articular-sided tendon avulsion injuries may be successfully treated with physical therapy, with return to sports expected; however, if associated pathology was present then nonoperative treatment was less successful. Improvement in pain and activities of daily living can be achieved with surgery after failed conservative management for rotator cuff injuries; however, the adolescent athlete will often have residual shoulder complaints during sports participation. LEVEL OF EVIDENCE Level III-retrospective cohort study.
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Kibler WB, Kuhn JE, Wilk K, Sciascia A, Moore S, Laudner K, Ellenbecker T, Thigpen C, Uhl T. The disabled throwing shoulder: spectrum of pathology-10-year update. Arthroscopy 2013; 29:141-161.e26. [PMID: 23276418 DOI: 10.1016/j.arthro.2012.10.009] [Citation(s) in RCA: 158] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 08/31/2012] [Accepted: 10/03/2012] [Indexed: 02/02/2023]
Abstract
In the 10 years since the current concept series entitled "The Disabled Throwing Shoulder: Spectrum of Pathology" was conceived and written, many studies have been reported that add much more information to the understanding of the disabled throwing shoulder (DTS). The editors of Arthroscopy and the authors of the original series believed that an update to the original series would be beneficial to provide an organized overview of current knowledge that could update the thought process regarding this problem, provide better assessment and treatment guidelines, and guide further research. A dedicated meeting, including current published researchers and experienced clinicians in this subject, was organized by the Shoulder Center of Kentucky. The meeting was organized around 5 areas of the DTS that were highlighted in the original series and appear to be key in creating the DTS spectrum and to understanding and treating the DTS: (1) the role of the kinetic chain; (2) the role and clinical evaluation of the scapula; (3) the role of deficits in glenohumeral rotation, glenohumeral internal rotation deficit, and total range-of-motion deficit in the causation of labral injury and DTS; (4) the role of superior labral (SLAP) injuries and rotator cuff injuries; and (5) the composition and progression of rehabilitation protocols for functional restoration of the DTS. The meeting consisted of presentations within each area, followed by discussions, and resulted in summaries regarding what is known in each area, what is not known but thought to be important, and strategies to implement and enlarge the knowledge base.
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Affiliation(s)
- W Ben Kibler
- Shoulder Center of Kentucky, Lexington, 40504, USA
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