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Inferior Capsular Shift Procedure in Athletes with Multidirectional Instability Based on Isolated Capsular and Ligamentous Redundancy

Orthopedic Research Department, Mercy Private Hospital, Melbourne, Australia

* Address correspondence to Klaus Bak, MD, Rosenstandsvej 13, DK - 2920 Charlottenlund, Denmark

Twenty-five athletes (26 shoulders) who underwent an inferior capsular shift procedure for multidirectional glenohumeral instability based on isolated capsular and ligamentous redundancy were evaluated at a median of 54 months (range, 25 to 113) after the operation. Twenty-one athletes (84%) returned to their preinjury activity level at a median of 5 months after surgery. Of 21 athletes involved in sports using overhead motions, 16 (76%) returned to their previous sport after the operation, and 12 (57%) were still active in this sport at the preinjury level at follow-up. According to the Rowe score, 23 shoulders (88%) were excellent or good. The University of California at Los Angeles score for 24 shoulders (92%) was excellent or good. The operations on two shoulders (8%) failed. One patient had a spontaneous redislocation, and one had recurrent subluxations. Nine contralateral shoulders had a history of significant instability; four of these had undergone Bankart repair. We concluded that athletes who have multidirectional instability based on isolated capsular and ligamentous redundancy can be successfully treated by an inferior capsular shift preserving the subscapularis tendon insertion. We found a high rate of return to demanding upper extremity sports in our patients, range of motion was restored in the majority of shoulders, and the failure rate after a median of 54 months was acceptable.

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