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J Arthroplasty. 2011 Dec;26(8):1460-7. doi: 10.1016/j.arth.2011.03.011. Epub 2011 May 13.

Posterior condyle surface damage on retrieved femoral knee components.

Author information

1
Concordia Joint Replacement Group, Concordia Hip and Knee Institute, Winnipeg, Manitoba, Canada.

Abstract

Twenty-two retrieved femoral knee components were identified with posterior condyle surface damage on average at 99° flexion (range, 43°-135° flexion). Titanium alloy material transfer and abrasive surface damage were evident on cobalt-chromium alloy femoral components that were in contact with titanium alloy tibial trays. Surface damage on the retrieved Oxinium femoral components (Smith and Nephew, Inc, Memphis, Tenn) that were in contact with titanium alloy tibial trays showed gouging, associated with the removal and cracking of the oxide and exposure of the zirconium-niobium alloy substrate. Cobalt-chromium alloy femoral components that were in contact with cobalt-chromium alloy tibial trays showed abrasive wear. Contact between the femoral component and tibial tray should be avoided to prevent surface damage to the femoral condyles, which could potentially accelerate polyethylene wear in vivo.

PMID:
21570806
DOI:
10.1016/j.arth.2011.03.011
[Indexed for MEDLINE]

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