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The Bone & Joint Journal

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The Bone & Joint Journal
Vol. 103-B, Issue 6 Supple A | Pages 94 - 101
1 Jun 2021
Roy ME Whiteside LA Ly KK Gauvain MJ

Aims

The aims of this study were to evaluate wear on the surface of cobalt-chromium (CoCr) femoral components used in total knee arthroplasty (TKA) and compare the wear of these components with that of ceramic femoral components.

Methods

Optical profilometry was used to evaluate surface roughness and to examine the features created by the wear process in a knee wear simulator. We developed a method of measuring surface changes on five CoCr femoral components and quantifying the loss of material from the articular surface during the wear process. We also examined the articular surface of three ceramic femoral components from a previous test for evidence of surface damage, and compared it with that of CoCr components.