Objectives:Glenoid bone loss is a well accepted risk factor for failure after arthroscopic stabilization of anterior glenohumeral instability. While less common than its anterior counterpart, posterior glenohumeral instability can be a significant source of disability in a young athletic population. It has been reported in as high as 10% of all glenohumeral instability cases. Bone loss in posterior instability, however, has been rarely discussed, and it is unknown whether this is commonly present, or clinically significant, in the treatment of posterior glenohumeral instability.
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