e167 Preoperative Chronic Pain Diagnosis Before TKA Leads to Lower Clinically Significant Symptomatic Improvement and Dissatisfaction at 1-year: A Prospective Analysis of 10,988 Patients

e255 Short Tibial Stems Do Not Improve 1-Year Outcomes or Reduce Healthcare Utilization in Obese Patients Undergoing Primary Total Knee Arthroplasty

e258 Defining and Achieving Substantial Clinical Benefit in Total Knee Arthroplasty: An Analysis of the KOOS and Patient Factors

e278 Establishing Diagnosis-Specific Measures of Clinical Significance for KOOS Scores in Aseptic Revision TKA: A Prospective Cohort of 1,223 Patients