Winkelmann, Moritz T. and Walter, Sven S. and Laver, Lior and Zeman, Florian and Fehske, Kai and Achenbach, Leonard (2021) Increased posterior shoulder capsule thickness in youth elite handball players: a sonographic investigation. JOURNAL OF SHOULDER AND ELBOW SURGERY, 30 (1). pp. 194-199. ISSN 1058-2746,
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Purpose: Range of motion adaptations in the shoulders of overhead throwing athletes have been reported, but knowledge about the development of soft-tissue adaptations is limited. The purpose of this study was to investigate differences in posterior shoulder capsule thickness and internal rotation between the throwing and non-throwing shoulder. Methods: On the basis of the sample size calculation, we assessed 63 youth elite handball players (33 boys and 30 girls, mean age: 13.6 0.9 years) for glenohumeral internal and external rotational range of motion, humeral retrotorsion, and posterior capsule thickness (PCT) with a manual goniometer and a portable ultrasound device and calculated sports-specific differences between the throwing and non-throwing shoulder as well as correlations with PCT. Results: Youth handball players showed side-to-side differences in internal rotation, external rotation, and humeral retrotorsion between the throwing and non-throwing shoulder. Posterior shoulder capsules were 1.21 times thicker (95% confidence interval: 1.1-1.3) in the throwing shoulder than in the non-throwing shoulder (1.3 0.3 mm vs. 1.2 0.2 mm, P < .0001). Loss of internal rotation did not correlate with PCT. Conclusions: In youth elite handball athletes, posterior shoulder tightness and subsequent sports-specific loss of internal rotation in the throwing shoulder are not related to PCT. Thus, in this age class, other (soft-tissue) factors must be responsible for this condition. (C) 2020 Journal of Shoulder and Elbow Surgery Board of Trustees. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HUMERAL RETROVERSION; SCAPULAR DYSKINESIS; BASEBALL PLAYERS; ROTATION; MOTION; RANGE; INJURY; RISK; RELIABILITY; ADAPTATIONS; Throwing; shoulder; adaption; overuse; injury; ultrasound |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Zentren des Universitätsklinikums Regensburg > Zentrum für Klinische Studien |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Sep 2022 09:25 |
| Last Modified: | 14 Sep 2022 09:25 |
| URI: | https://pred.uni-regensburg.de/id/eprint/47442 |
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