Shear strength and toughness of trabecular bone are more sensitive to density than damage.

ABSTRACT: Microdamage occurs in trabecular bone under normal loading, which impairs the mechanical properties. Architectural degradation associated with osteoporosis increases damage susceptibility, resulting in a cumulative negative effect on the mechanical properties. Treatments for osteoporosis could be targeted toward increased bone mineral density, improved architecture, or repair and prevention of microdamage. Delineating the relative roles of damage and architectural degradation on trabecular bone strength will provide insight into the most beneficial targets. In this study, damage was induced in bovine trabecular bone samples by axial compression, and the effects on the mechanical properties in shear were assessed. The damaged shear modulus, shear yield stress, ultimate shear stress, and ene

SUBMITTER: Garrison JG 

PROVIDER: S-EPMC3208752 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature