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Alternative bearings in total knee arthroplasty: risk of early revision compared to traditional bearings: an analysis of 62,177 primary cases
Journal article   Open access   Peer reviewed

Alternative bearings in total knee arthroplasty: risk of early revision compared to traditional bearings: an analysis of 62,177 primary cases

Maria C S Inacio, Guy Cafri, Elizabeth W Paxton, Steven M Kurtz and Robert S Namba
Acta orthopaedica, v 84(2)
Apr 2013
DOI: https://doi.org/10.3109/17453674.2013.784660
PMID: 23485105
Featured in Collection :   UN Sustainable Development Goals @ Drexel
url
https://doi.org/10.3109/17453674.2013.784660View
Published, Version of Record (VoR)CC BY-NC V4.0,  Open

Abstract

Aged Arthroplasty, Replacement, Knee - adverse effects Arthroplasty, Replacement, Knee - methods Chromium Alloys - adverse effects Female Follow-Up Studies Humans Knee Prosthesis - adverse effects Male Middle Aged Polyethylene - adverse effects Prosthesis Design - adverse effects Prosthesis Failure Reoperation - statistics & numerical data Retrospective Studies Risk Factors Treatment Outcome Zirconium - adverse effects
There is no substantial clinical evidence for the superiority of alternative bearings in total knee arthroplasty (TKA). We compared the short-term revision risk in alternative surface bearing knees (oxidized zirconium (OZ) femoral implants or highly crosslinked polyethylene (HXLPE) inserts) with that for traditional bearings (cobalt-chromium (CoCR) on conventional polyethelene (CPE)). The risk of revision with commercially available HXLPE inserts was also evaluated. All 62,177 primary TKA cases registered in a Total Joint Replacement Registry between April 2001 and December 2010 were retrospectively analyzed. The endpoints for the analysis were all-cause revisions, septic revisions, or aseptic revisions. Bearing surfaces were categorized as OZ-CPE, CoCr-HXLPE, or CoCr-CPE. HXLPE inserts were stratified according to brand name. Confounding was addressed using propensity score weights. Marginal Cox-regression models adjusting for surgeon clustering were used. The proportion of females was 62%. Average age was 68 (SD 9.3) years, and median follow-up time was 2.8 (IQR 1.2-4.9) years. After adjustments, the risks of all-cause, aseptic, and septic revision with CoCr-HXLPE and OZ-CPE bearings were not statistically significantly higher than with traditional CoCr-CPE bearings. No specific brand of HXLPE insert was associated with a higher risk of all-cause, aseptic, or septic revision compared to CoCr-CPE. At least in the short term, none of the alternative knee bearings evaluated (CoCr-HXLPE or OZ-CPE) had a greater risk of all-cause, aseptic, and septic revision than traditional CoCr-CPE bearings.

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50 citations in Web of Science
59 citations in Scopus

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Collaboration types
Industry collaboration
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Web of Science research areas
Orthopedics
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