Secondary Rotator Cuff Dysfunction Following Total Shoulder Arthroplasty for Primary Glenohumeral Osteoarthritis: Results of a Multicenter Study with More Than Five Years of Follow-up

In this study, rates of secondary rotator cuff dysfunction with moderate or severe superior subluxation of the prosthetic humeral head increased with the duration of follow-up and significantly influenced the clinical and radiographic outcome of total shoulder arthroplasty performed for primary glenohumeral osteoarthritis. Preoperative fatty infiltration of the infraspinatus muscle and implantation of the glenoid component with superior tilt were prognostic factors.