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Michael Winn
10-25-2000, 12:35 PM
Hello all,

My name is Michael Winn and I am currently doing my PhD on the vibration
characteristics of the tibiofemoral and patellofemoral joint surfaces during
movement. Preliminary work will involve recording the sounds from two
opposing surfaces sliding over one another. To accurately represent the in
vivo test conditions(a leg extension task performed at speeds between 10 and
70 degrees per second), I would like what representative sliding speeds to
use. From the literature I have obtained values for the radius of the
posterior femoral condyle and have calculated sliding speeds of
approximately 0.004 and .03 metres per second for respective angular
velocites of 10 and 67.5 degrees per second. I have also found quotes in the
literature which provide ranges between 0.001 and 0.1 meters per second
(Huiqun & Ateshian 1997, Ateshian & Wang 1995), however, the authors did not
provide a theoreticasl basis for these figures or give references.

If anyone can help with helpful references or supportive data it would be
greatly appreciated.

Michael Winn
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