Due to both its shape and its structural architecture, the mechanics of the pelvic bone are complex. In Finite Element (FE) models, these aspects have often been (over) simplified, sometimes leading to conclusions which did not bear out in reality. The purpose of this study was to develop a more realistic FE model of the pelvic bone. This not only implies that the model has to be three-dimensional, but also that the thickness of the cortical shell and the density distribution of the trabecular bone throughout the pelvic bone have to be incorporated in the model in a realistic way. For this purpose, quantitative measurements were performed on computer tomography scans of several pelvic bones, after which the measured quantities were allocated to each element of the mesh individually. To validate this FE model, two fresh pelvic bones were fitted with strain gages and loaded in a testing machine. Stresses calculated from the strain data of this experiment were compared to the results of a simulation with the developed pelvic FE model.
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August 1995
Technical Papers
Development and Validation of a Three-Dimensional Finite Element Model of the Pelvic Bone
M. Dalstra,
M. Dalstra
Biomechanics Section, Institute of Orthopaedics, University of Nijmegen, Nijmegen, The Netherlands
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R. Huiskes,
R. Huiskes
Biomechanics Section, Institute of Orthopaedics, University of Nijmegen, Nijmegen, The Netherlands
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L. van Erning
L. van Erning
Institute of Diagnostic Radiology, University Hospital Nijmegen St. Radboud, Nijmegen, The Netherlands
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M. Dalstra
Biomechanics Section, Institute of Orthopaedics, University of Nijmegen, Nijmegen, The Netherlands
R. Huiskes
Biomechanics Section, Institute of Orthopaedics, University of Nijmegen, Nijmegen, The Netherlands
L. van Erning
Institute of Diagnostic Radiology, University Hospital Nijmegen St. Radboud, Nijmegen, The Netherlands
J Biomech Eng. Aug 1995, 117(3): 272-278 (7 pages)
Published Online: August 1, 1995
Article history
Received:
December 20, 1992
Revised:
August 18, 1994
Online:
October 30, 2007
Citation
Dalstra, M., Huiskes, R., and van Erning, L. (August 1, 1995). "Development and Validation of a Three-Dimensional Finite Element Model of the Pelvic Bone." ASME. J Biomech Eng. August 1995; 117(3): 272–278. https://doi.org/10.1115/1.2794181
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