P0521 Nearly Half of All 90-day Postoperative Arthroplasty Complications are Missed by Voluntary Morbidity and Mortality Conference Reporting

P0522 Early Return to the Operating Room following Total Joint Arthroplasty in the Medicare Population – Patient Characteristics and Associated Costs

P0523 Trends in Complications and Outcomes in Patients Aged 65 and Younger Undergoing Total Hip Arthroplasty: Data from the American Joint Replacement Registry

P0524 Spine or Hip First? Outcomes in Patients Undergoing Sequential Lumbar Spine or Hip Surgery

P0525 Do Breast Cancer Patients Have Increased Risk of Complications after Primary Total Hip Arthroplasty and Total Knee Arthroplasty?