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The Scientific World Journal
Volume 2012, Article ID 242403, 7 pages
http://dx.doi.org/10.1100/2012/242403
Research Article

Bone Mineral Densities and Mechanical Properties of Retrieved Femoral Bone Samples in relation to Bone Mineral Densities Measured in the Respective Patients

1Biomechanics and Implant Technology Research Laboratory, Department of Orthopaedics, University Medicine Rostock, 18057 Rostock, Germany
2Inorganic Solid State Chemistry Group, Institute of Chemistry, University of Rostock, 18057 Rostock, Germany

Received 9 August 2012; Accepted 18 September 2012

Academic Editors: D. H. Lee, C. C. Niu, and J. B. Renner

Copyright © 2012 Yvonne Haba et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The bone mineral density (BMD) of retrieved cancellous bone samples is compared to the BMD measured in vivo in the respective osteoarthritic patients. Furthermore, mechanical properties, in terms of structural modulus () and ultimate compression strength () of the bone samples, are correlated to BMD data. Human femoral heads were retrieved from 13 osteoarthritic patients undergoing total hip replacement. Subsequently, the BMD of each bone sample was analysed using dual energy X-ray absorptiometry (DXA) as well as ashing. Furthermore, BMDs of the proximal femur were analysed preoperatively in the respective patients by DXA. BMDs of the femoral neck and head showed a wide variation, from  mg/cm2 to  mg/cm2. BMDs of the bone samples measured by DXA and ashing yielded values of  mg/cm2 and  mg/cm3, respectively. and amounted to  N/mm2 and  N/mm2. Significant correlation was found between the DXA and ashing data on the bone samples and the DXA data from the patients at the femoral head ( and 0.79, resp.). correlated significantly with BMD in the patients and bone samples as well as the ashing data (, , and , resp.).