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Differences in Stress and Total Deformation Due to Muscle Attachment to the Femur
Abstract:To achieve accurate and precise results of finite element analysis (FEA) of bones, it is important to represent the load/boundary conditions as identical as possible to the human body such as the bone properties, the type and force of the muscles, the contact force of the joints, and the location of the muscle attachment. In this study, the difference in the Von-Mises stress and the total deformation was compared by classifying them into Case 1, which shows the actual anatomical form of the muscle attached to the femur when the same muscle force was applied, and Case 2, which gives a simplified representation of the attached location. An inverse dynamical musculoskeletal model was simulated using data from an actual walking experiment to complement the accuracy of the muscular force, the input value of FEA. The FEA method using the results of the muscular force that were calculated through the simulation showed that the maximum Von-Mises stress and the maximum total deformation in Case 2 were underestimated by 8.42% and 6.29%, respectively, compared to Case 1. The torsion energy and bending moment at each location of the femur occurred via the stress ingredient. Due to the geometrical/morphological feature of the femur of having a long bone shape when the stress distribution is wide, as shown in Case 1, a greater Von-Mises stress and total deformation are expected from the sum of the stress ingredients. More accurate results can be achieved only when the muscular strength and the attachment location in the FEA of the bones and the attachment form are the same as those in the actual anatomical condition under the various moving conditions of the human body.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1077785Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2034
 D. T. Reilly, A. H. Burrstein, V. H. Frankel, "The elastic modulus for bone" Journal of Biomechanics., vol.7, 1974, pp. 271-275.
 P. Knauss, "Material properties and strength behavior of the compact bone tissue at the coxal human-femur" Biomedical Techniques., vol.26, 1981, pp. 311-315.
 P. Knauss, "Material properties and strength behavior of spongy bone tissue at the coxal human-femur" Biomedical Techniques., vol.26, 1981, pp. 200-210.
 R. A. Brand, R. D. Crowninshield, C. E. Wittstock, D. R. Pedersen, C. R. Clark. F. M. van Krieken, "A model of lower extremity muscular anatomy" Journal of Biomechanical Engineering., vol.104, 1982, pp. 304-310.
 D. R. Pedersen, R. A. Brand, D. T. Davy, "Pelvic muscle and acetabular contact forces during gait" Journal of Biomechanics., vol.30, 1997, pp. 959-965.
 M. Viceconti, M. Baleani, A. De Lollis, A. Toni, "An FEA-based protocol for the pre-clinical validation of custom-made hip implants" Medical Engineering & Technology., vol.22, 1998, pp. 257-262.
 G. N. Duda, M. Heller, J. Albinger, S. Olaf, E. Schneider, L. Claes, "Influence of muscle forces in femoral strain distribution" Journal of Biomechanics., vol.31, 1998, pp. 841-846.
 J. D. Currey, "The many adaptations of bone" Journal of Biomechanics., vol.36, 2003, pp. 1487-1495.
 C. Bitsakos, J. kerner, I. fisher, A. A. Amis "The effect of muscle loading on the simulation of bone remodeling in the proximal femur" Journal of Biomechanics., vol.38, 2005, pp. 133-139.
 A. D. Speirs, M. O. Heller, G. N. Duda. W. R. Taylor, "Physiologically based boundary conditions in finite element modeling" Journal of Biomechanics., vol.40, 2007, pp. 2318-2323.
 I. Jonkers, N. Sauwen, G. Lenaerts, M. Mulier, G. V. Perre, S. Jaecques, "Relation between subject-specific hip joint loading, stress distribution in the proximal femur and bone mineral density changes after total hip replacement" Journal of Biomechanics., vol.41, 2008, pp. 3405-3413.
 A.T.M Phillips, "The femur as a musculo-skeletal construct: A free boundary condition modeling approach" Medical Engineering & Physics., vol.31, 2009, pp. 673-680.
 N. S. Sverdlova, U. Witzel, "Principles of determination and verification of muscle forces in the human musculoskeletal system: Muscle forces to minimize bending stress" Journal of Biomechanics., vol.43, 2010, pp. 841-846.
 R.Bryan, P. S. Mohan, A. Hopkins, F. Galloway, M. Taylor, P. B. Nair, "Statistical modeling of the whole human femur incorporating geometric and material properties" Medical Engineering & Physics., vol.32, 2010, pp. 57-65.