Abstract des Autors

Posterior shoulder instability in athletes is not common and is difficult to diagnose. Examination of athletes with this condition can show pain, instability, or both. Unless the athlete can demonstrate the instability, the diagnosis can be difficult. The abnormality can include lax glenohumeral ligaments, a torn labrum, or a bony deficiency. The glenohumeral ligaments can tear at the labral or at the humeral insertions. Humeral avulsion of the glenohumeral ligaments has been previously described in the context of anterior instability. This case report describes a college football player with posterior instability due to an avulsion of the posterior glenohumeral ligaments from the humerus. The only previously reported case of a posterior humeral avulsion of the glenohumeral ligament involves a hockey player with presumed posterior instability. Verf.-Referat