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Evaluation biomécanique d'une prothèse discale cervicale : analyses in vitro et in vivo

Abstract : Through this thesis, we evaluated the In Vitro and In Vivo biomechanical behavior of a ball-and-socket cervical disc prosthesis. In Vitro tests on human cadaveric cervical spines permitted to assess segmental 3D kinematics at instrumented and adjacent levels. The measurement of the intradiscal pressure provided us data on changes of loads transmission at adjacent discs following arthroplasty. Different testing conditions were evaluated: 1 and 2-levels arthrodesis, 1 and 2-levels arthroplasty, hybrid constructs. In addition, using a finite element model of the cervical spine, we investigated the relevance of applying a follower preload during In vitro experiments. Through a prospective and multicentre study, including 32 patients operated with cervical total disc replacement, In Vivo assessment of spine kinematics allowed for measurement of ranges of motion and location of mean center of rotation at instrumented and adjacent levels. Finally, using the EOSTM bi-planar stereo-radiographic system, we could achieve In Vivo three-dimensional motion analysis of instrumented segments.
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Contributor : Cédric Barrey Connect in order to contact the contributor
Submitted on : Sunday, April 10, 2011 - 7:23:15 PM
Last modification on : Wednesday, October 27, 2021 - 2:49:53 PM
Long-term archiving on: : Monday, July 11, 2011 - 2:34:36 AM


  • HAL Id : pastel-00584788, version 1


Cédric Barrey. Evaluation biomécanique d'une prothèse discale cervicale : analyses in vitro et in vivo. Biomécanique []. Arts et Métiers ParisTech, 2011. Français. ⟨NNT : 2010ENAM0009⟩. ⟨pastel-00584788⟩



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