Monir JG, Tams C, Wright TW, et al. - This study was carried out to ascertain risk factors correlated with loss of range of motion (ROM) after primary reverse shoulder arthroplasty (RTSA). Between 2007 and 2017, researchers conducted a retrospective review using a commercial international RTSA database (Exactech Inc, Gainesville, FL, USA) of patients undergoing primary RTSA. They compared univariate and multivariate analyses comparing these patients to control cohorts to assess risk factors for loss of motion. The data indicate that after primary RTSA, patients with greater preoperative shoulder ROM or higher patient-reported outcomes are at higher risk of losing ROM. Though the majority were still satisfied, they are also at higher risk of reporting lower postoperative satisfaction. It has been considered that surgeons should strongly counsel individuals with well-preserved preoperative function on the risk of loss of range of motion.