Reverse Shoulder Arthroplasty is Superior to Hemiarthroplasty for Cuff Tear Arthropathy withPreserved Motion

Background: it is unclear whether hemiarthroplasty (ha) or reverse shoulder arthroplasty (rs) are superior for patientswith cuff tear arthropathy (cta) and preserved preoperative motion (elevation >90˚).methods: this was a retrospective, single institution study. patients who underwent rsa or ha for cta were included ifthey had preserved preoperative motion with a minimum of 2 years of follow-up, or until complication/revision. shoulderrom and functional outcomes scores were obtained.results: twenty-six has and 21 rsas were evaluated at mean of 38.6 months (ha) and 36.3 months (rsa). patientsin the rsa group were significantly older at surgery (73.9 versus 65.1 years; p=0.003). postoperatively, the meanchange in active elevation was -15° for ha versus 26° for rsa, with rsa having significantly greater active elevation(153° versus 123°; p=0.01). there were no significant differences in final internal or external rotation between groups.superior outcomes were seen for rsa versus ha for ases score (84 vs. 66, p=0.003), simple shoulder test (8.8 vs.7.3, p=0.3), single assessment numeric evaluation (85 vs. 70, p=0.017), and 100mm vas pain (7 vs. 33, p<0.001).conclusion: in patients with cta and preserved preoperative forward elevation, rsa provided greater pain relief,superior functional outcomes, and better rom compared with ha.