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Hierarchical Structure of Porosity in Cortical and Trabecular Bones

Published online by Cambridge University Press:  16 March 2012

Ekaterina Novitskaya ,
Elham Hamed ,
Jun Li ,
Zherrina Manilay ,
Iwona Jasiuk  and
Joanna McKittrick
Ekaterina Novitskaya
Affiliation:
University of California, San Diego, Materials Science and Engineering Program, 9500 Gilman Dr., La Jolla, CA 92093, USA
Elham Hamed
Affiliation:
University of Illinois at Urbana-Champaign, Department of Mechanical Science and Engineering, 1206 West Green Street, Urbana, IL 61801, USA
Jun Li
Affiliation:
University of Illinois at Urbana-Champaign, Department of Mechanical Science and Engineering, 1206 West Green Street, Urbana, IL 61801, USA
Zherrina Manilay
Affiliation:
University of California, San Diego, Department of Mechanical and Aerospace Engineering, 9500 Gilman Dr., La Jolla, CA 92093, USA
Iwona Jasiuk
Affiliation:
University of Illinois at Urbana-Champaign, Department of Mechanical Science and Engineering, 1206 West Green Street, Urbana, IL 61801, USA
Joanna McKittrick
Affiliation:
University of California, San Diego, Materials Science and Engineering Program, 9500 Gilman Dr., La Jolla, CA 92093, USA University of California, San Diego, Department of Mechanical and Aerospace Engineering, 9500 Gilman Dr., La Jolla, CA 92093, USA
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Abstract

In this paper the amount and morphology of cortical and trabecular bone porosities were estimated using optical microscopy and micro-computed tomography technique. The hierarchical structure of porosity at different structural scales spanning from a single lacuna (sub-microscale) to trabecular or cortical bone levels (mesoscale) was characterized and described. This study was conducted by using samples of untreated, deproteinized and demineralized bones, to obtain better insight into the bone structure and porosities. The motivation of this work is that the porosity in bone has a major effect on its mechanical response, yet it is often neglected in bone models. Investigations of the mechanical properties of bone and its main components (collagen and mineral phases), complemented by modeling, are of importance in orthopedics.

Keywords

boneporositymicrostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1420: Symposium OO – Multiscale Mechanics of Hierarchical Materials , 2012 , mrsf11-1420-oo10-09
Copyright
Copyright © Materials Research Society 2012

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