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TECHNICAL PAPERS

Validity of Photoelastic Strain Measurement on Cadaveric Proximal Femora

[+] Author and Article Information
Richard R. Glisson, Douglas S. Musgrave, Robert D. Graham, Thomas P. Vail

Orthopaedic Research Laboratories, Duke University Medical Center, Durham, NC 27710

J Biomech Eng 122(4), 423-429 (Mar 22, 2000) (7 pages) doi:10.1115/1.1287162 History: Received December 16, 1998; Revised March 22, 2000
Copyright © 2000 by ASME
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Figures

Grahic Jump Location
Diagram of experimental loading conditions and strain measurement sites. Strains were obtained at eight locations located on the midlines of the anterior, posterior, medial, and lateral surfaces.
Grahic Jump Location
Scatterplot comparing shear strains obtained from photoelastic coatings with shear strains obtained from rosette strain gages. Data points represent the combined results of three applied loads, as identified by the legend. The legend reports the equation of the best-fit line and the Pearson product-moment correlation coefficient for each load magnitude.
Grahic Jump Location
Comparison of shear strains obtained from photoelastic coatings with those obtained from rosette strain gages at the same locations for the medium (570 N) applied load magnitude. Error bars indicate standard deviation, n=4 femora.
Grahic Jump Location
Scatterplot comparing shear strains obtained from photoelastic coatings with predominant principal strains (the principal strains with the largest absolute magnitudes) determined from rosette strain gages at the same locations. The legend reports the equation of the best-fit line and the Pearson product-moment correlation coefficient for each load magnitude.
Grahic Jump Location
Comparison of shear strains determined from photoelastic coatings with rosette-derived maximum and minimum principal strain absolute magnitudes at eight measurement locations on four femora under the medium (570 N) applied load.

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