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Load transfer in bovine plexiform bone determined by synchrotron x-ray diffraction

Published online by Cambridge University Press:  31 January 2011

R. Akhtar,
M.R. Daymond,
J.D. Almer and
P.M. Mummery
R. Akhtar*
Affiliation:
School of Materials, The University of Manchester, Manchester M1 7HS, United Kingdom
M.R. Daymond
Affiliation:
Department of Mechanical and Materials Engineering, Queen’s University, Kingston, Ontario K7L 3N6, Canada
J.D. Almer
Affiliation:
X-Ray Operations and Research (XOR), Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439
P.M. Mummery
Affiliation:
School of Materials, The University of Manchester, Manchester M1 7HS, United Kingdom
*
a) Address all correspondence to this author. e-mail: riaz.akhtar@manchester.ac.uk
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Abstract

High-energy synchrotron x-ray diffraction (XRD) has been used to quantify load transfer in bovine plexiform bone. By using both wide-angle and small-angle XRD, strains in the mineral as well as the collagen phase of bone were measured as a function of applied compressive stress. We suggest that a greater proportion of the load is borne by the more mineralized woven bone than the lamellar bone as the applied stress increases. With a further increase in stress, load is shed back to the lamellar regions until macroscopic failure occurs. The reported data fit well with reported mechanisms of microdamage accumulation in bovine plexiform bone.

Keywords

X-ray diffraction (XRD)BoneBiological

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Type
Articles
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Journal of Materials Research , Volume 23 , Issue 2 , February 2008, pp. 543 - 550
Copyright
Copyright © Materials Research Society 2007

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