The American journal of sports medicine
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Previous studies on massive rotator cuff tears have not addressed the outcomes of tears extending to the subscapularis tendon. ⋯ The arthroscopic repair of massive tears results in substantial improvements in shoulder function, regardless of the presence of combined subscapularis tears. However, this study showed a trend toward a high failure rate for the repair of massive posterosuperior rotator cuff tears extending over half of the subscapularis tendon. Therefore, other treatment options should also be considered for this type of rotator cuff tear.