Evaluation On Mechanical Properties Of
A Single Trabecular In Bovine Femur
Author(s)
S. Enoki, M. Higashiura, M. Sato, K. Tanaka & T. Katayama
Abstract
The increase of patients with osteoporosis is a social problem. Osteoporosis
decreases bone strength and increases the risk of fracture. The finding of
prevention and treatment methods is an urgent issue. Since cancellous bone is
metabolically more active than cortical bone, cancellous bone is used for
diagnosis of osteoporosis. There are a lot of studies about stress analysis of
cancellous bone, and quantities and orientation of trabecular bone that make up
the cancellous bone. These studies reported that the trabecular structures
contribute to the mechanical properties of cancellous bone. It is considered that
the mechanical property of trabecular is based on the assumption that it is
constant regardless of the direction and site orientation. However, literature
evaluating the mechanical properties of a single trabecular yields a wide
dispersion of the results; the mechanical properties of trabecular bone has not
been clarified yet. It is necessary to reduce the dispersion of test results to allow
for quantitative evaluation of the mechanical properties of trabecular bone and is
essential to evaluate the strength of cancellous bone. In this study, single
trabecular specimens were polished to bending test specimens in rectangular
shape. X-ray μCT was used to obtain shape of trabecular bone specimens.
Moreover, three point bending tests were conducted on these specimens and the
bending elastic modulus and strength were obtained. Bending elastic modulus
and bending strength of the trabecular bone were almost the same value
regardless of the direction of each axis. Mechanical properties of trabecular by
the bending test do not depend on the orientation of cancellous bone.
Keywords: trabecular, cancellous bone, bending modulus, bending strength,
X-ray CT.
Keywords
trabecular, cancellous bone, bending modulus, bending strength,
X-ray CT.
Related Book
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