Paper Title:
Orthogonal Properties of Human Trabecular Bone by Spherical Indentation Test
  Abstract

The elastic modulus and the apparent density of the trabecular bone were evaluated from spherical indentation tests and Computed Tomography and their relationship was quantified. After the femurs were prepared and embedded with respect to their anatomical orientation, the transverse planes of the trabecular bone specimens were scanned at 1mm intervals using a CT scanner. The metaphyseal regions were sectioned with a diamond-blade saw, producing 8mm cubes. Using a custom-made spherical indentation tester, the cubes were mechanically tested in the anteriorposterior (AP), medial-lateral (ML), and inferior-superior (IS) directions. After determination of modulus from the mechanical testing, the apparent densities of the specimens were measured. The results showed that the IS modulus was significantly greater than both the AP and ML moduli with the AP modulus greater than the ML modulus. This demonstrated that orthogonality was a structural characteristic of the trabecular bone. The power relationship between the modulus and the apparent density was also found to be statistically significant.

  Info
Periodical
Key Engineering Materials (Volumes 326-328)
Edited by
Soon-Bok Lee and Yun-Jae Kim
Pages
793-796
DOI
10.4028/www.scientific.net/KEM.326-328.793
Citation
T. S. Bae, T. S. Lee, K. W. Choi, "Orthogonal Properties of Human Trabecular Bone by Spherical Indentation Test", Key Engineering Materials, Vols. 326-328, pp. 793-796, 2006
Online since
December 2006
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Price
$32.00
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