e516 The Seasonal Variability of Surgical Site Infection Following Shoulder Arthroplasty

e517 The effect of preoperative mental health and socioeconomic status on outcomes following primary total shoulder arthroplasty

e518 Early Postoperative Opioid Use in Total Shoulder Arthroplasty Is Associated with Dose-Dependent Risk of Major Surgical and Medical Complications

e519 Assessment of Change in EMG-based Muscular Activity and Kinematics of the Shoulder Joint after Reverse and Anatomic Total Shoulder Arthroplasty

e520 Concentric versus eccentric humeral tray options in reverse total shoulder arthroplasty: Comparison with short-term functional and radiological outcomes