e511 Longer Surgical Times but No Difference in Patient Reported Outcomes with Fellow Assistance in Reverse Total Shoulder Arthroplasty

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

e521 An Accelerated Deep Learning Model Can Accurately Identify Clinically Important Humeral and Scapular Landmarks on Preoperative and Postoperative Anatomic Arthroplasty Plain Radiographs

e528 Decreased Preoperative External Rotation is a Predictor of Need for Intraoperative Conversion from Anatomic TSA to RSA in the Setting of Primary Glenohumeral Osteoarthritis

e532 Does Adding Hydrogen Peroxide to Chlorhexidine Gluconate Increase the Effectiveness of Skin Preparation in Reducing Cutaneous Cutibacterium Levels? A Randomized Controlled Trial