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analyse biomécanique de différentes configurations instrumentales pour le traitement des fractures vertébrales par modélisation éléments finis

Abstract : Surgical treatment of a fractured vertebra aims to relieve the patient's symptoms by restoring the vertebra, supplementing the spine or by replacing a part with an implant in order to support the spine in its biomechanical functions. Multiple situations exist due to the various choices of implants (posterior fixations, bone cement, SpineJack) and the specificities of the trauma.In this context, finite element models of instrumented thoracolumbar segments in different configurations using the SpineJack have been adapted, evaluated and analyzed. On the other hand, tools for the quantitative characterization of instrumented spines and especially of fractured vertebrae have been set up. Thus, data from a clinical partnership were analyzed using this semi-automatic process of quantitative characterization.Finite element modeling has highlighted the influence of fracture severity on mechanical stresses in the instrumented spine. Many implant configurations have been analyzed. Furthermore, the image data analysis process demonstrated its ability to provide a quantitative characterization of the severity of the fracture.Theses results should provide novel elements for surgeons and biomechanical engineers, which could yield improvement of patient care and better prevention of mechanical complications.
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https://pastel.archives-ouvertes.fr/tel-03719544
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Submitted on : Monday, July 11, 2022 - 12:13:11 PM
Last modification on : Friday, August 5, 2022 - 2:54:01 PM

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  • HAL Id : tel-03719544, version 1

Citation

Lucas Le Gallo. analyse biomécanique de différentes configurations instrumentales pour le traitement des fractures vertébrales par modélisation éléments finis. Biomécanique [physics.med-ph]. HESAM Université, 2022. Français. ⟨NNT : 2022HESAE038⟩. ⟨tel-03719544⟩

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