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Shoulder Arthroplasty for the Management of Chronic Glenohumeral Dislocation
Chronic locked dislocations of the glenohumeral joint are challenging for patients and surgeons. Although the glenohumeral joint is the most commonly dislocated major joint in the body, chronic locked dislocations are uncommon in active individuals. Most acute dislocations are anterior, readily recognized and diagnosed, and successfully managed with early closed reduction. Acute posterior glenohumeral dislocations are much less common, reportedly accounting for less than 3% of dislocations; however, acute posterior glenohumeral dislocations are more frequently missed at the initial presentation and often result in chronic locked dislocation, reportedly in 50% to 80% of patients. The mean age of patients treated with shoulder arthroplasty for chronic posterior dislocation is approximately 53 years, whereas the mean age of patients treated for chronic anterior dislocation is approximately 68 years.