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RESEARCH PAPERS

Electrogoniometer for the Measurement of Human Elbow Joint Rotation

[+] Author and Article Information
E. Y. Chao, K. N. An, L. J. Askew, B. F. Morrey

Orthopedic Biomechanics Laboratory, Mayo Clinic / Mayo Foundation, Rochester, Minn. 55901

J Biomech Eng 102(4), 301-310 (Nov 01, 1980) (10 pages) doi:10.1115/1.3138227 History: Received December 08, 1979; Revised August 11, 1980; Online June 15, 2009

Abstract

Since the electrogoniometric method has been justified for the measurement of lower extremity joint motion, a similar device is developed for the measurement of elbow joint and forearm rotations. In this design, the axis of forearm rotation coincides with the anatomical axis which eliminates the cross talk existing in the regular triaxial goniometer. Although the axis of abduction-adduction is still offset from the elbow joint, special linkage arrangement was used to obtain equivalent motion. Experimental method was used to validate the accuracy of the device and model simulation was performed to emphasize the importance of accurate placement of the instrument on test subjects. Application of the present apparatus to normal subjects was studied to illustrate the range of elbow motion required in performing normal activities of daily living. This device is currently used in the functional evaluation of patients with elbow and forearm problems.

Copyright © 1980 by ASME
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