The Clinical and Radiographic Impact of Increasing Medialization of the Bone-Prosthesis Interface in Primary Reverse Total Shoulder Arthroplasty At Short-Term Follow-Up

Abstract

To compare the short-term clinical and radiographic outcomes of patients with differing amounts of medialization of the bone-prosthesis interface (MBPI) after primary reverse total shoulder arthroplasty (RTSA) using a prosthesis system with lateralization both in the humerus and the glenoid. We hypothesized that increases in MBPI by reaming the glenoid to neutral version using a lateralized system would not lead to decreased range of motion (ROM), decreased functional scores or increased scapular notching.