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RESEARCH PAPERS

Nonlinear Dynamic Behavior of the Human Knee Joint—Part II: Time-Domain Analyses: Effects of Structural Damage in Postmortem Experiments

[+] Author and Article Information
Dortmans, H. Jans, A. Sauren, A. Huson

Eindhoven University of Technology, Eindhoven, The Netherlands

J Biomech Eng 113(4), 392-396 (Nov 01, 1991) (5 pages) doi:10.1115/1.2895417 History: Received March 01, 1990; Revised January 15, 1991; Online March 17, 2008

Abstract

A description is given of the results obtained for step excitation for two human knee joint specimens using a time-domain analysis technique. As was expected from the results of a previous study, the magnitude of the dynamic load applied has a marked influence upon the stiffness and damping values for the two observed vibration modes. Deliberate damaging of selected joint elements also yields a well observable change in the dynamic behavior of the joint although these changes are difficult to interpret. Here the use of a nonlinear dynamic numerical model of the knee joint seems indispensable. An important observation is, however, that the experimental method discussed here enables to quantify the behavior of the joint and therefore may provide a valuable tool for validation of such a model.

Copyright © 1991 by The American Society of Mechanical Engineers
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