Reconstruction of massive rotator cuff lesions with a synthetic interposition graft: a prospective study of 41 patients.

In the present prospective study, we report about our experience with massive rotator cuff tears treated by means of a non-resorbable transosseously fixated patch combined with subacromial decompression. Forty-one patients were followed clinically and radiographically for a mean duration of 43 months. Their mean preoperative Constant and Murley score improved (P<0.001) from 25.7 preoperatively to 72.1 postoperatively. Substantial pain relief and improvement in the performance of activities of daily living were obtained. Anatomically, the repair resulted in a mean acromiohumeral interval of 8.6 mm. At the latest follow-up, three patients presented with a new tear between the inserted mesh and the supraspinatus musculotendinous unit. Reoperations were not performed. For short-term periods, restoring a massive rotator cuff tendon defect with synthetic grafts combined with subacromial decompression can give significant pain relief and improvement of range of motion and strength with few complications.