Oxidized Zirconium Total Knee Arthroplasty Implant Failure in a Patient With Knee Instability

Oxidized zirconium was introduced as an alternative bearing surface to decrease polyethylene wear and reduce aseptic mechanical failure of hip and knee arthroplasties. Oxidized zirconium combines the strength of a metal with wear properties of ceramic, proposing increased survivorship of implant com...

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Bibliographic Details
Published in:Arthroplasty today 2020-09, Vol.6 (3), p.552-555
Main Authors: Kore, Lydia, Bates, Taylor, Mills, Gavin, Lybeck, Dustin
Format: Article
Language:English
Subjects:
Case Report
Metallosis
Oxidized zirconium
Total knee arthroplasty
Total knee replacement
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Summary:Oxidized zirconium was introduced as an alternative bearing surface to decrease polyethylene wear and reduce aseptic mechanical failure of hip and knee arthroplasties. Oxidized zirconium combines the strength of a metal with wear properties of ceramic, proposing increased survivorship of implant components, and possible decreased rate of revision. Despite a harder surface than cobalt-chromium, the substrate of zirconium is a softer metal. Although uncommon, prior reports have described accelerated wear and severe metallosis after femoral head dislocation in oxidized zirconium total hip arthroplasty; however, this has not been described in total knee arthroplasty. We report a case of an oxidized zirconium total knee arthroplasty failure in a patient with knee instability. This is the first report of catastrophic failure of an oxidized zirconium total knee arthroplasty implant.
ISSN:2352-3441
2352-3441
DOI:10.1016/j.artd.2020.06.015