A numerical approach to the biomechanical analysis of bone fracture healing |
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| Institution: | 1. Department of Endocrinology and Medicine, Austin Health, University of Melbourne, Melbourne, Australia;2. Musculoskeletal Quantitative Imaging Research Group, Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA;3. Department of Radiology, Stanford University, Stanford, CA, USA;4. Centre for Epidemiology and Biostatistics, University of Melbourne, Melbourne, Australia;5. Institute for Health and Aging, Australian Catholic University, Melbourne, Australia |
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| Abstract: | Investigations are reported in the literature, by means of experimental, analytical and numerical methods, concerning the biomechanical properties of bone. However, the evolutionary phenomena of bone fracture healing does not have a large reference literature. This work investigates and describes the behaviour of inclined human femur fractures with external fixation up to complete healing. A numerical formulation based on the finite element method has been adopted. Geometric configuration is defined using data from a magnetic resonance process applied to a femur in vivo. A three dimensional model has been developed by adopting an orthotropic material law for cortical bone and an isotropic law for the fracture gap zone. Stress and strain reponses of the bone and fixation device are investigated with reference to the evolutionary behaviour of the healing tissue. |
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