In this work a Bombelli cementless isoelastic RM total hip prosthesis was considered. It was implanted over a course of 14 years on the patient and studied subsequently to its chirurgical replacement. Computed Tomography, radiographies and 3-D laser scanning were used to assess the prosthesis geometry, while the original femur anatomy was modeled based on 2-D radiographies taken at different stages of the in-vivo implant of the prosthesis. A finite element model was developed, based on the generated 3-D geometrical model, considering a linear elastic behavior and typical loading conditions. This analysis allowed determining stress and strain fields throughout bone-prosthesis contact surface and critical areas in terms of micromovements. The developed procedure, consisting of 3-D scanning, generation of geometrical 3-D models and finite element analysis, results in a powerful tool to follow-up and predict failure mechanisms in hip joint prosthesis.
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World Tribology Congress III
September 12–16, 2005
Washington, D.C., USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4202-9
PROCEEDINGS PAPER
Biomechanical Modeling of Hip Joint Prosthesis
M. C. Gaspar,
M. C. Gaspar
Escola Superior de Tecnologia do Instituto Polite´cnico de Castelo Branco (E.S.T./I.P.C.B.), Castelo Branco, Portugal
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C. Pereira,
C. Pereira
Instituto Superior de Engenharia de Coimbra (I.S.E.C.), Coimbra, Portugal
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F. V. Antunes
F. V. Antunes
Faculdade de Cieˆncias e Tecnologia da Uuniversidade de Coimbra (F.C.T.U.C.), Coimbra, Portugal
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M. C. Gaspar
Escola Superior de Tecnologia do Instituto Polite´cnico de Castelo Branco (E.S.T./I.P.C.B.), Castelo Branco, Portugal
A. Mateus
E.S.T./I.P.L., Leiria, Portugal
C. Pereira
Instituto Superior de Engenharia de Coimbra (I.S.E.C.), Coimbra, Portugal
F. V. Antunes
Faculdade de Cieˆncias e Tecnologia da Uuniversidade de Coimbra (F.C.T.U.C.), Coimbra, Portugal
Paper No:
WTC2005-64276, pp. 703-704; 2 pages
Published Online:
November 17, 2008
Citation
Gaspar, MC, Mateus, A, Pereira, C, & Antunes, FV. "Biomechanical Modeling of Hip Joint Prosthesis." Proceedings of the World Tribology Congress III. World Tribology Congress III, Volume 2. Washington, D.C., USA. September 12–16, 2005. pp. 703-704. ASME. https://doi.org/10.1115/WTC2005-64276
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