e451 In Reverse Shoulder Arthroplasty, Glenoid Lateralization Significantly Increases the Risk of Acromial Stress Fracture, and Selectively Medializing Higher-Risk Patients Significantly Reduces It

e452 Polyethylene Wear: An Under-Recognized Cause of Failed Shoulder Arthroplasty

e453 The effect of osteoporosis on medical and implant-related complications following total shoulder arthroplasty: a propensity-matched cohort analysis

e454 Predictors of Ability to Perform Internal Rotation-Dependent Activities of Daily Living and Favorable Satisfaction Despite Loss of Objective Internal Rotation After Reverse Shoulder Arthroplasty

e455 Rate of Recovery following Reverse Shoulder Arthroplasty