Arthroscopic treatment of anterosuperior rotator cuff tears.

This study evaluated pre- and postoperative clinical and structural outcome data on anterosuperior rotator cuff tears involving the supraspinatus and subscapularis treated by arthroscopic methods. Between June 2006 and October 2007, a total of 155 consecutive patients underwent an arthroscopic repair for a supraspinatus or supraspinatus and infraspinatus (superior) rotator cuff tear. Of these, 44 (28%) were identified on preoperative imaging to have involvement of the subscapularis. Confirmation of subscapularis tears occurred during arthroscopic repair of the superior rotator cuff. If the subscapularis was found to be torn, it was documented, and an arthroscopic repair was performed. Postoperative clinical and radiographic outcomes were assessed with the belly press and lift-off tests, range of motion, strength, pain score, Constant score, and either a magnetic resonance imaging arthrogram or a computed tomography arthrogram at an average of 15 months postoperatively. Failure was determined based on rotator cuff integrity on radiologic studies. Sixteen of the 44 anterosuperior rotator cuff tears identified on preoperative imaging were found to have a full-thickness subscapularis tear requiring repair on arthroscopic examination. On preoperative imaging, subscapularis tears were all either grade 1 or grade 2 (no complete grade 3 tears). Mean follow-up was 16.9 months (range, 13-24 months). Compared with preoperative values, significant postoperative improvements occurred in Constant scores, forward flexion, strength, and pain scores (P<.01). Patients also showed significant improvements in both the lift-off and belly press tests (P<.001). Mean postoperative patient satisfaction was 7.9 (range, 5-10) with 10 (59%) of 17 patients being extremely satisfied. Two of the 17 patients with an anterosuperior rotator cuff tear had confirmed retears of the supraspinatus (1 partial and 1 full-thickness) with no radiographic evidence of retear of any of the subscapularis repairs at most recent follow-up.