The Effect of Soft Tissue on Measurements of Vibrational Bone Motion by Skin-Mounted Accelerometers

[+] Author and Article Information
J. C. Ziegert, J. L. Lewis

Departments of Civil Engineering and Orthopaedic Surgery and Rehabilitation Engineering Program, Northwestern University, Evanston, Ill. 60201

J Biomech Eng 101(3), 218-220 (Aug 01, 1979) (3 pages) doi:10.1115/1.3426248 History: Received January 08, 1979; Online October 21, 2010


The effect of the soft tissue between bone and a preloaded skin surface accelerometer was studied in vivo by comparing its output with the output of an accelerometer connected directly to the bone by a needle through the soft tissue. A 34-g skin surface accelerometer gave an output with little resemblance to the bone motions, appearing to oscillate at its resonant frequency on the soft tissue. A 1.5-g skin surface accelerometer showed nearly identical output to the bone acceleration.

Copyright © 1979 by ASME
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