Document Type
Article
Publication Title
Journal of Orthopaedic Experience & Innovation
Abstract
Introduction
Total knee arthroplasty (TKA) is a common orthopaedic procedure used to alleviate pain and restore mobility in patients with knee pain. Substantial resources are committed to updating and refining new knee implant designs to improve outcomes. The aim of this study was to compare revision rates and failure modes between newer implants and their older counterparts.
Methods
A systematic literature review of national registries was conducted to identify predecessor and successor implant designs from four manufacturers. Individual implant revision data points for each implant design across the registries were compared between generations by manufacturer. Reported revision rates of TKA implant designs were analyzed in addition to implant type and method of fixation when available. Additionally, TKA revision indications were collected and compared between registries.
Results
We found no differences in revision rates between newer implant designs and their older counterparts at any recorded time point between 1 and 15 years. A meta-analysis compared the indication percentages for infection, loosening, mechanical complication, instability, pain, wear, fracture, and stiffness and showed significant differences between registries (P<0.001).
Conclusion
The study’s findings showed comparable revision rates between successor and predecessor TKA implant designs. Other parameters, such as patient satisfaction and functional outcomes, are necessary to demonstrate the value of a new implant.
DOI
10.60118/001c.127694
Publication Date
5-8-2025
Keywords
total knee arthroplasty, revision rate, registry, implant data
ISSN
2691-6541
Recommended Citation
Lam AD, Hobbs J, Parikh N, Pipa D, Saxena A, Star A. Have Modern Total Knee Arthroplasty Implant Improvements Affected Revision Rates? A Registry Review of Modern Implants and their Predecessors. Journal of Orthopaedic Experience & Innovation. 2025; . doi: 10.60118/001c.127694.
