A New Model of Articular Cartilage in Human Joints

[+] Author and Article Information
F. F. Ling

Rensselaer Polytechnic Institute, Troy, N. Y.

J. of Lubrication Tech 96(3), 449-454 (Jul 01, 1974) (6 pages) doi:10.1115/1.3452000 History: Received July 13, 1973; Online October 18, 2010


A new model of the fluid-filled articular cartilage in human joints is introduced. It is a composite which can imbibe and exudate across the surface and offers resistance in tension and compression, while preserving the essential nonlinearity. The model makes tractable transient static or moving contact problems whose solutions are paramount in the study of failure criteria associated with arthritic conditions. In two examples, indentation—time characteristics and friction coefficient, based on deformation theory, are found and they agree with measured values. Moreover, a third example illustrates the mutual inclusiveness of the two leading theories: the weeping and boosted lubrication theories.

Copyright © 1974 by ASME
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