Three-dimensional geometrical and mechanical modelling of the lumbar spine. |
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Authors: | F Lavaste W Skalli S Robin R Roy-Camille C Mazel |
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Affiliation: | Laboratoire de Biomécanique, Ecole Nationale Supérieure d'Arts et Métiers, Paris, France. |
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Abstract: | The main objective of this study is to design a three-dimensional geometrical and mechanical finite element model of the lumbar spine. The model's geometry is constructed using six parameters per vertebra. These parameters are digitized from two X-rays (anterio-posterior and lateral), thus yielding an individualized model which can be arrived at from the radiographs of a tested specimen. This procedure makes the model validation easier, as geometry is generally a factor of dispersion in experimental results. The geometrical reconstruction, in the form of a finite elements mesh, was effected for the whole lumbar spine. The global coherence of the model was verified. |
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