201 Unexpected Positive Cultures in 230 Aseptic Revision THAs: High Midterm Survivorship Free of PJI

202 One-Stage Exchange for Early Postoperative Infection after Uncemented THA: Favorable Results at 5 Years

298 Fifty Years of Progress: Trends in Survivorship and Failure Mechanisms in Over 41,000 Primary TKAs

311 Mortality after Revision Total Hip Arthroplasty for Periprosthetic Joint Infection

488 Fifty Years of Progress: Trends in Survivorship and Failure Mechanisms in over 42,000 Primary THAs