In-Vivo Elastic and Damping Response of the Human Leg to Impact Forces

[+] Author and Article Information
J. Mizrahi, Z. Susak

Loewenstein Rehabilitation Hospital, Ra’anana, Israel

J Biomech Eng 104(1), 63-66 (Feb 01, 1982) (4 pages) doi:10.1115/1.3138305 History: Received June 15, 1981; Revised September 17, 1981; Online June 15, 2009


The transmission of impact forces in a straight leg from the foot to the level of the greater trochanter was investigated by a two-degree of freedom linear damped-spring model. Foot ground forces measured during a vertical jump and accelerations measured at the level of the greater trochanter were used as model input. The model elastic constant and damping coefficient were determined by solving the dynamic equations of the system. The model was used to predict peak acceleration values for a given input force. Satisfactory prediction of the magnitudes of the first two peaks of the acceleration (maximum difference of 3 percent) was achieved in the two subjects studied.

Copyright © 1982 by ASME
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