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RESEARCH PAPERS

A 20-Year Perspective on the Mechanical Properties of Trabecular Bone

[+] Author and Article Information
Tony M. Keaveny, Wilson C. Hayes

Orthopaedic Biomechanics Laboratory, Department of Orthopaedic Surgery, Charles A. Dana Research Institute, Beth Israel Hospital and Harvard Medical School, 330 Brookline Ave., Boston, MA 02215

J Biomech Eng 115(4B), 534-542 (Nov 01, 1993) (9 pages) doi:10.1115/1.2895536 History: Revised August 10, 1993; Online March 17, 2008

Abstract

We have reviewed highlights of the research in trabecular bone biomechanics performed over the past 20 years. Results from numerous studies have shown that trabecular bone is an extremely heterogeneous material—modulus can vary 100-fold even within the same metaphysis—with varying degrees of anisotropy. Strictly speaking, descriptions of the mechanical properties of trabecular bone should therefore be accompanied by specification of factors such as anatomic site, loading direction, and age. Research efforts have also been focused on the measurement of mechanical properties for individual trabeculae, improvement of methods for mechanical testing at the continuum level, quantification of the three-dimensional architecture of trabecular bone, and formulation of equations to relate the microstructural and continuum-level mechanical properties. As analysis techniques become more sophisticated, there is now evidence that factors such as anisotropy and heterogeneity of individual trabeculae might also have a significant effect on the continuum-level properties, suggesting new directions for future research. Other areas requiring further research are the time-dependent and multiaxial failure properties at the continuum level, and the stiffness and failure properties at the lamellar level. Continued research in these areas should enhance our understanding of issues such as age-related bone fracture, prosthesis loosening, and bone remodeling.

Copyright © 1993 by The American Society of Mechanical Engineers
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