RT Journal A1 Cuff, Derek A1 Clark, Rachel A1 Pupello, Derek A1 Frankle, Mark T1 Reverse Shoulder Arthroplasty for the Treatment of Rotator Cuff DeficiencyA Concise Follow-up, at a Minimum of Five Years, of a Previous Report* JF The Journal of Bone & Joint Surgery JO The Journal of Bone & Joint Surgery YR 2012 FD November 7 VO 94 IS 21 SP 1996 OP 2000 DO 10.2106/JBJS.K.01206 UL http://dx.doi.org/10.2106/JBJS.K.01206 AB Abstract:  We previously evaluated ninety-four patients (ninety-six shoulders) who underwent reverse shoulder arthroplasty with use of a central compressive screw along with 5.0-mm peripheral locking screws for baseplate fixation and a center of rotation lateral to the glenoid. The purpose of this study was to report updated results at a minimum follow-up of five years. Since the last report, an additional two patients underwent revision surgery: one for recurrent instability and one for resorption of a proximal humeral allograft. The patients continue to have improved outcome scores and range of motion. Survivorship with the end point being revision for any reason was 73.5 months, with 94% survival at sixty months. Radiographic follow-up showed that two (3%) of seventy-six patients included in the survivorship analysis had asymptomatic humeral loosening, seven (9%) had scapular notching, and no patient had glenoid baseplate loosening or baseplate failure. The patients have maintained their improved function with durable clinical and radiographic results at a minimum of five years.Level of Evidence:  Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.