Subscapular muscle transposition for repair of chronic rotator cuff tears

Abstract

Subscapularis transposition into a supraspinatus or supraspinatus and infraspinatus rotator cuff defect has been overlooked as a method of tendon repair. The surgical technique for this type of repair, with or without the concomitant use of a glenohumeral resurfacing prosthesis, is described. Postoperatively, the extremity is supported in a position that does not allow stress to be placed on a repair until healing has occurred. Generally, physical therapy is begun early and continued for many months. In the present series, satisfactory relief of pain was achieved in 22 of the 26 patients. Active abduction in the plane of the scapula averaged 120 degrees for patients with rotator cuffs repair and prosthetic replacement and 130 degrees for those with rotator cuff repair alone. Twelve patients gained more than 30 degrees active abduction, and four lost this amount of motion, or greater, as compared with preoperative capabilities. In two of the 26 patients, the rotator cuff repair was completely disrupted during the acute postoperative period. Twenty-five of the 26 patients were satisfied with the surgical procedure. This type of repair seems to be a secure repair, bring healthy tendon tissue into an area of tendon degeneration and loss of tissue substance. As such, it satisfies the basic surgical principles of achieving repair with healthy tissue that is not under tension. The results compare favorably with those reported in the literature on rotator cuff repair and further suggest that this technique is an acceptable alternative for repairing large or massive rotator cuff tears that have tendon substance loss. However, this technique should not be used for smaller tears, for which more simple techniques are more adequate, because if a retear occurs during the postoperative period, the cuff detect might be quite large, with significant pain postoperatively and functional limitations resulting.