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TECHNICAL PAPERS: Bone/Orthopedic

Finite Element Prediction of Proximal Femoral Fracture Patterns Under Different Loads

[+] Author and Article Information
M. J. Gómez-Benito, J. M. Garcı́a-Aznar, M. Doblaré

Group of Structural Mechanics and Material Modeling, Aragón Institute of Engineering Research (I3A), University of Zaragoza, Marı́a de Luna, 7-50018 Zaragoza, Spain

J Biomech Eng 127(1), 9-14 (Mar 08, 2005) (6 pages) doi:10.1115/1.1835347 History: Received December 30, 2003; Revised September 02, 2004; Online March 08, 2005
Copyright © 2005 by ASME
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References

Figures

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FE mesh of the femur: anterior and posterior views, boundary conditions, and applied loads
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Average distribution of the apparent density (g/cm3) in a healthy femur: (a) anterior view, (b) midcoronal cut, and (c) posterior view
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Directional distribution of the elastic modulus (GPa) (surfaces represent the elastic moduli at a given point along different directions 31)
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Experiments of Yang et al. 26 (a) experimental device, (b) loads and boundary conditions in the FE model, and (c) complete simulated model
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Load applied at the lesser tronchanter (α=0.2, load amplitude=3040 N): (a) x ray of a neck fracture 41, and (b) distribution of the coefficient of risk to fracture predicted with the anisotropic criterion
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Distribution of the RFC, for the case of a load applied at the lesser tronchanter, using different bone fracture isotropic criteria (α=0.2, load amplitude=3040 N): (a) Von Mises, (b) Hoffman, and (c) maximum principal tensile stress
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Distribution of the RFC for a load applied at the lesser tronchanter, using different bone fracture criteria using α=0.4, load amplitude=6700 N: (a) Cowin, (b) von Mises, (c) Hoffman, and (d) maximum principal tensile stress
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Distribution of the RFC for a load applied at the lesser tronchanter, using different bone fracture criteria using α=0.6, load amplitude=11,000 N: (a) Cowin, (b) von Mises, (c) Hoffman, and (d) maximum principal tensile stress
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Load applied at the greater tronchanter (α=0.2, load amplitude=3040 N): (a) x-ray of the experimental neck fracture 26, and (b) distribution of the coefficient of risk to fracture predicted with the anisotropic criterion
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Distribution of the RFC for a load applied at the greater tronchanter, using different bone fracture isotropic criteria: (a) Von Mises, (b) Hoffman, and (c) maximum principal tensile stress

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