Case Report
Copyright ©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Jun 26, 2021; 9(18): 4783-4788
Published online Jun 26, 2021. doi: 10.12998/wjcc.v9.i18.4783
Femoral neck stress fractures after trampoline exercise: A case report
Dae Cheol Nam, Sun Chul Hwang, Eun Chang Lee, Myung-Geun Song, Jun-Il Yoo
Dae Cheol Nam, Eun Chang Lee, Myung-Geun Song, Jun-Il Yoo, Department of Orthopaedic Surgery, Gyeongsang National University School of Medicine, Jinju 52727, South Korea
Sun Chul Hwang, Department of Orthopaedic Surgery and Institute of Health Sciences, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Jinju 52727, South Korea
Author contributions: Lee EC and Yoo JI contributed equally to this work; Song MG and Yoo JI designed research; Song MG and Yoo JI performed research; Lee EC and Hwang SC contributed new reagents/analytic tools; Lee EC and Nam DC analyzed data; Nam DC and Yoo JI wrote the paper; Nam DC contributed revision process and wrote the revised manuscript.
Informed consent statement: Patient provided informed written consent prior to study enrollment.
Conflict-of-interest statement: All authors declare that there are no conflicts of interest involved.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Jun-Il Yoo, MD, Assistant Professor, Department of Orthopaedic Surgery, Gyeongsang National University School of Medicine, 79 Gangnam-ro, Jinju 52727, South Korea. furim@daum.net
Received: January 15, 2021
Peer-review started: January 15, 2021
First decision: February 11, 2021
Revised: February 17, 2021
Accepted: April 2, 2021
Article in press: April 2, 2021
Published online: June 26, 2021
Abstract
BACKGROUND

Femoral neck stress fractures (FNSFs) are commonly found in long-distance running athletes. For FNSFs, early diagnosis and proper treatment are important. The objective of this study was to report FNSFs that occurred after excessive exercise using trampoline in middle-aged women.

CASE SUMMARY

The patient was a 43-year-old woman who exercised jumping on a trampoline for 6 wk for 1-3 h a day to diet. Exercise includes repeated flexion-extension of the hip joint. The patient was admitted to the hospital due to sudden bilateral groin pain that occurred suddenly during a trampoline exercise. Hip magnetic resonance imaging (MRI) revealed bilateral FNSFs. After 2 wk of follow-up with conservative treatment, the pain slightly decreased. However, it did not disappear completely. It was determined that it was difficult to control symptoms only by conservation treatment. Thus, closed reduction and internal fixation using a cannulated screw were performed for the more painful left hip joint. After operation, the pain was improved. Walking using crutches was possible. Follow-up MRI showed that the right femoral head signal was decreased compared to the left femoral head signal. Therefore, nonsteroidal anti-inflammatory drug and conservative treatment were provided.

CONCLUSION

In middle-aged people, excessive trampoline exercise can repeat hip flexion and extension for a short period of time, leading to FNSFs.

Keywords: Trampoline exercise, Femoral neck stress fracture, Neck, Fracture, Case report

Core Tip: Femoral neck stress fractures (FNSFs) are commonly found in long-distance running athletes. For FNSFs, early diagnosis and proper treatment are important. In middle-aged people, excessive trampoline exercise can repeat hip flexion and extension for a short period of time, leading to FNSFs.