Material properties of sheep trabecular bone determined by nanomechanical testing

Author

Mittra, E. ; Qin, Y.X.

Author_Institution

Dept. of Biomed. Eng., Stony Brook Univ., NY, USA

fYear

2003

Firstpage

229

Lastpage

230

Abstract

How the material properties of trabecular bone relate to its bulk mechanical behavior is not well understood. Multiple trabeculae in four cubic samples harvested from the distal femora of sheep were evaluated using a nanoindentation testing device. The average modulus and hardness was 20.2±4.0 GPa and 1.1±0.4 GPa, respectively. These values were consistent across surface region, specimen, and feature, thereby exhibiting a very homogenous quality at this level. The source of the highly anisotropic trabecular continuum, therefore, does not directly derive from its material properties.

Keywords

biomechanics; bone; elastic moduli; indentation; microhardness; average modulus; bulk mechanical behavior; cubic samples; distal femora; feature; hardness; highly anisotropic trabecular continuum; material properties; multiple trabeculae; nanoindentation testing device; nanomechanical testing; sheep trabecular bone; specimen; surface region; very homogenous quality; Cancellous bone; Ethanol; High-resolution imaging; In vivo; Irrigation; Material properties; Materials testing; Mechanical factors; Plastics; Protocols;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioengineering Conference, 2003 IEEE 29th Annual, Proceedings of

Print_ISBN

0-7803-7767-2

Type

conf

DOI

10.1109/NEBC.2003.1216077

Filename

1216077