146 Preoperative Contralateral Joint Pain and/or Back Pain Are Associated with Worse Baseline PROMs and Failing to Achieve the 22-Point Substantial Clinical Benefit for HOOS-JR after THA: Implications for the New CMS PROMs Policy

147 One Size Fits None: Why Universal Clinically Significant PROMs' Thresholds Fail Total Hip Arthroplasty Patients—A PROMs Phenotype-Driven Outcome Assessment

177 Preoperative Contralateral Joint Pain and Back Pain Significantly Impact 1-Year PROMs and Satisfaction Following Primary Total Knee Arthroplasty

306 PROMs Collection for Total Knee Arthroplasty in a Large Health System Under the New CMS Mandate: Uncovering the Missing Variables

494 Eight-Year Trends in Patient-Reported Outcomes Following Primary Total Hip Arthroplasty: Analysis of Nearly 10,000 Patients (2016-2023)