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Biomaterials and Biomedical Engineering
  Volume 2, Number 4, December 2015, pages 197-206
open access

Influence of porosity on the behavior of cement orthopaedic of total hip prosthesis
Benouis Ali, Serier Boualem and Benbarek Smail

    This paper presents three-dimensional finite element method analyses of the distribution of equivalents stress of Von Mises. Induced around a cavity located in the bone cement polymethylmethacrylate (PMMA). The presences and effect of its position in the cement was demonstrated,thus on the stress level and distribution. The porosity interaction depending on their positions, and their orientations on the interdistances their mechanical behaviour of bone cement effects were analysed. The obtained results show that micro-porosity located in the proximal and distal zone of the prosthesis is subject to higher stress field. We show that the breaking strain of the cement is largely taken when the cement, containing the porosities very close adjacent to each other.
Key Words
    bone cement; porosity; fracture mechanics; stress concentration; finite element method
Mechanics and Physics of Materials Laboratory, Djillali Liabes University of Sidi Bel-Abbes,BP89 cité Larbi Ben M\'hidi, Sidi Bel-Abbes, Algeria

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