Radiographic Assessment of Reverse Shoulder Arthroplasty

Preoperative and postoperative radiographs were reviewed and graded by 2 attending orthopedic surgeons. In cases of rotator cuff tear arthropathy, disease severity was graded using the classification by Hamada.¹² Preoperative CT scans and MRIs were corrected to the scapular plane assessed when available. Glenoid version was measured at the level of the coracoid tip on axial series referencing Friedman’s line. Postoperative radiographs were examined to determine the presence of glenoid and humeral component loosening or subsidence as well as glenoid notching as defined by Sirveaux.²⁴ (link) Humeral radiolucencies were graded using the zone system analogous to that of Gruen et al for THA.¹⁷ (link) When present, acromial or scapular spine stress fractures were classified using the Levy classification.¹⁵ (link)