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TECHNICAL PAPERS

Linear Poroelastic Cancellous Bone Anisotropy: Trabecular Solid Elastic and Fluid Transport Properties

[+] Author and Article Information
Sean S. Kohles

Kohles Bioengineering, 1731 SE 37th Ave, Portland, OR 97214-5135Department of Mechanical Engineering, Oregon State University, Corvallis, OR

Julie B. Roberts

TEI Biosciences, Inc., 7 Elkins St, Boston, MA 02127

J Biomech Eng 124(5), 521-526 (Sep 30, 2002) (6 pages) doi:10.1115/1.1503374 History: Received July 01, 2001; Revised June 01, 2002; Online September 30, 2002
Copyright © 2002 by ASME
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References

Figures

Grahic Jump Location
The relationship between anisotropic, apparent elastic moduli and transport properties in bovine cancellous bone. The plots show: A) the mean and error values (standard deviation, sd, or standard error of the mean, sem) for modulus and permeability; B) the orthotropic data for all samples (n=20); and C) the linear trendlines with coefficients that are statistically different than zero (p<0.5) for the three orientations (when combined, R2=0.0405). Permeability values were originally presented in Kohles et al. 35.
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A graphical comparison between porosity as a predictor of: A) apparent elastic moduli and B) permeability. The Kozeny equation was fit to the permeability versus porosity data as a means to empirically describe this relationship (C=0.022, equation 4).
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The relationship between anisotropic, apparent elastic moduli and material stiffness coefficients. A linear regression applied to the combined data results in a positive correlation with R2=0.3172.

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