474 Does the preoperative arthrogram have value in the diagnosis of a painful total knee arthroplasty?

475 Weight-to-Tibial Baseplate Surface Area Ratio Predicts Aseptic Loosening in Total Knee Arthroplasty (TKA)

476 Outcomes of Revision Total Knee Arthroplasty for Arthrofibrosis: The Negative Consequences of Prior Intervention

477 The association between highly crosslinked versus conventional polyethylene for total knee arthroplasty and revision risk out to 20-years follow-up