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Stryker Osteonics: Prosthetic Knee Joint

By P.G. Hjorth, J. King, A. Korobeinikov, J. Mason, S. McKee and S. Wilson


We examine, within a simple bearing model of a knee joint that only consideres pure sliding, the effect of the presence of a small vertical hole in the load area on the fluid film properties. The calculations indicate that fluid is entrapped in such a hole, which, for constant load, causes a smaller minimal film separation of the two surfaces.\ud This will lower the horizontal friction, but may also bring about surface contact in high load situations

Topics: Materials, Medical and pharmaceutical
Year: 2008
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