To assess the percentages of patients achieving minimal clinically important difference and substantial clinical benefit in KOOS-JR scores post knee arthroplasty.
Queried the American Joint Replacement Registry for primary TKA cases from 2018 to 2023.
Analyzed KOOS-JR scores for distribution-based and anchor-based minimal clinically important differences.
Evaluated associations between patient demographics and benchmark achievement using generalized linear models.
86.8% achieved the distribution-based minimal clinically important difference.
76.5% met the anchor-based minimal clinically important difference.
Only 65.7% reached the substantial clinical benefit threshold for KOOS-JR.
Abstract
Background: The U.S. Centers for Medicare p 80% patient satisfaction. Level of Evidence: Prognostic Level II . See Instructions for Authors for a complete description of levels of evidence.