A reverse total shoulder arthroplasty (RTSA) is strongly suggested for patients who suffer from rotator cuff (RTC) arthropathy, where RTC deficiency causes abnormal loading leading to articular cartilage damage. Studies show that 47% of RTSA patients have rotator cuff arthropathy and 27% have some form of osteoarthritis (OA) [1]. In an effort to restore function, an RTSA resurfaces the joint by converting the shoulder into a ball and socket joint, where the humeral head and glenoid are fitted with a cup and glenosphere, respectively. This creates a fulcrum by which the deltoids may abduct the arm.
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