P241 Comparing One vs. Two Year Patient-Reported Outcomes After Reverse Shoulder Arthroplasty for Proximal Humerus Fractures

P242 Biocompatibility of the Subacromial Balloon Spacer: an in vivo Murine Pouch Model Cytokine Analysis

P243 Improving the Exposure of the Olecranon Osteotomy by Lateral Collateral Ligament Release

P244 Anatomic or Reverse Total Shoulder Arthroplasty? How Fellowship Training Affects Selection of Arthroplasty Type

P245 Impact of surgical variability on implant stability in stemless arthroplasty