Copyright ©The Author(s) 2016.
World J Orthop. Dec 18, 2016; 7(12): 776-784
Published online Dec 18, 2016. doi: 10.5312/wjo.v7.i12.776
Table 1 Keys to diagnosing internal impingement
HistoryShoulder stiffness
Need for prolonged warm-up
Decline in performance (loss of velocity of control)
Posterior shoulder pain in late cocking phase
Physical examPosterior glenohumeral joint line tenderness
Increased external rotation, decreased internal rotation
Scapular dyskinesis
Positive anterior relocation test
Positive posterior impingement sign
ImagingBennett lesion (exostosis of posteroinferior glenoid rim)
Sclerosis of greater tuberosity, posterior humeral head cysts, rounding of posterior glenoid rim
Posterosuperior labral tears
Partial-thickness articular-sided rotator cuff tears (supraspinatus, infraspinatus)