Τitle

A finite element model technique to determine the mechanical response of a lumbar spine segment under complex loads

This study presents a CT-based finite element model of the lumbar spine taking into account all functionrelated
boundary conditions, such as anisotropy of mechanical properties, ligaments, contact elements, mesh
size, etc. Through advanced mesh generation and employment of compound elements, the developed model is
capable of assessing the mechanical response of the examined spine segment for complex loading conditions,
thus providing valuable insight on stress development within the model and allowing the prediction of critical
loading scenarios. The model was validated through a comparison of the calculated force-induced inclination/
deformation and a correlation of these data to experimental values. The mechanical response of the examined
functional spine segment was evaluated, and the effect of the loading scenario determined for both vertebral
bodies as well as the connecting intervertebral disc.