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Micromechanical modeling of elastic properties of cortical bone accounting for anisotropy of dense tissue.

Abstract：

:The paper analyzes the connection between microstructure of the osteonal cortical bone and its overall elastic properties. The existing models either neglect anisotropy of the dense tissue or simplify cortical bone microstructure (accounting for Haversian canals only). These simplifications (related mostly to insufficient mathematical apparatus) complicate quantitative analysis of the effect of microstructural changes - produced by age, microgravity, or some diseases - on the overall mechanical performance of cortical bone. The present analysis fills this gap; it accounts for anisotropy of the dense tissue and uses realistic model of the porous microstructure. The approach is based on recent results of Sevostianov et al. (2005) and Saadat et al. (2012) on inhomogeneities in a transversely-isotropic material. Bone's microstructure is modeled according to books of Martin and Burr (1989), Currey (2002), and Fung (1993) and includes four main families of pores. The calculated elastic constants for porous cortical bone are in agreement with available experimental data. The influence of each of the pore types on the overall moduli is examined.

journal_name

J Biomech

journal_title

Journal of biomechanics

authors

Salguero L,Saadat F,Sevostianov I

doi

10.1016/j.jbiomech.2014.08.019

subject

Has Abstract

pub_date

2014-10-17 00:00:00

pages

3279-87

issue

13

eissn

0021-9290

issn

1873-2380

pii

S0021-9290(14)00443-6

journal_volume

47

pub_type

杂志文章

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