Extract
Traumatic forces applied to the shoulder during sports activities often
result in glenohumeral instability. Frequently, the main reason for
instability is the lack of soft-tissue restraint to the translation of the
humeral head on the glenoid. Approximately 5% of the cases of glenohumeral
instability have been reported to involve posterior instability of the
shoulder1. Studies
have shown that posterior instability has several soft-tissue-related
etiologies, including capsulolabral detachment, capsular laxity, and rotator
interval
lesions1,2.