Clinical and Radiographic Outcomes of Total Shoulder Arthroplasty With a Hybrid Dual-Radii Glenoid Component

In total shoulder arthroplasty (TSA), glenoid prostheses have conforming or nonconforming designs. A hybrid glenoid was designed with dual radii of curvature: a central conforming region surrounded by an outer nonconforming region. We retrospectively reviewed the cases of 169 patients who underwent 196 hybrid glenoid prosthesis TSAs for primary glenohumeral arthritis. Clinical data, retrieved for 178 shoulders at a mean follow-up of 4.8 years, included physical examination, 36-Item Short Form Health Survey (SF-36), American Shoulder and Elbow Surgeons (ASES), Simple Shoulder Test (SST), subjective Neer criteria, and postoperative complication data. Radiographic data were retrieved for 136 shoulders at a mean of 3.7 years. Kaplan-Meier survivorship analysis was performed with glenoid or humeral revision as the endpoint. All range of motion and survey measures improved in a statistically significant manner (P < .001). Of 139 respondents, 130 (93.5%) stated they were satisfied or very satisfied with their TSA. Of 178 patients, only 3 (1.7%) required revision for component loosening: 2 glenoid and 1 humeral. Of 136 shoulders, 86 (63.2%) had no glenoid lucencies, and 91 (66.9%) had no humeral stem lucencies. Use of a hybrid-congruency glenoid prosthesis had excellent intermediate clinical and radiographic outcomes in the treatment of primary glenohumeral osteoarthritis.