Title :
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
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;
Conference_Titel :
Bioengineering Conference, 2003 IEEE 29th Annual, Proceedings of
Print_ISBN :
0-7803-7767-2
DOI :
10.1109/NEBC.2003.1216077
