Minimal clinically important differences in short-term postoperative Knee injury and Osteoarthritis Outcome Score (KOOS) after total knee arthroplasty: A prospective cohort study

Background/Purpose: The purpose of this study was to determine the short-term minimal clinically important differences (MCIDs) in Knee injury and Osteoarthritis Outcome Score (KOOS) after total knee arthroplasty (TKA) using anchor method. Methods: Scores for each KOOS subscale were calculated preoperatively 3 6 months postoperatively create receiver operating characteristic curves, MCIDs calculated. Results: at TKA symptoms, 10 pain, activities daily living (ADL), 8 sport/recreation, quality life (QOL). 9 13 ADL, 16 QOL. areas under curves range 0.8–0.9 both TKA. Conclusion: by subscales determined highly accurate.