Journal Published Online: 01 May 2006
Volume 3, Issue 7

Computational Wear Prediction of UHMWPE in Knee Replacements

CODEN: JAIOAD

Abstract

A multibody dynamic contact model predicted the damage sustained by two tibial inserts tested under different conditions on an AMTI knee simulator machine. The model required a wear factor of 7.7 × 10−7 mm3/Nm to match the wear volume measured from the first insert after 0.86 million cycles of simulated gait. The model matched the medial and lateral damage depths measured from the second insert to within 0.3 mm after 5 million cycles of simulated gait and stair (10:1 ratio). Computational models may be valuable for screening new knee implant designs rapidly and performing sensitivity studies of component positioning issues.

Author Information

Zhao, D
University of Florida, Gainesville, FL
Gregory Sawyer, W
University of Florida, Gainesville, FL
Fregly, BJ
University of Florida, Gainesville, FL
Pages: 6
Price: $25.00
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Stock #: JAI100259
ISSN: 1546-962X
DOI: 10.1520/JAI100259