Finite Element Analysis of Fixation System Influence on the Thoracolumbar Spine Stability
All segments of the spine are characterized by a corresponding curvature in the sagittal plane and different geometrical parameters of vertebrae, which affects the complicated structure of transition between subsequent segments. The aim of the study was to assess changes occurring in the thoracolumbar spine, as a result of application of the transpedicular fixation. The research was conducted on finite element model, which was constructed on the basis of CT images. Five different configurations of the model were analyzed: focusing on vertebral compression fractures and degeneration of intervertebral discs. The analysis showed that the highest displacement occurred for a segment with intervertebral disc degeneration. Transpedicular fixation of injured thoracolumbar spine is given the opportunity to improve the stability and stiffness of the segment under consideration.
K. Szkoda and C. Pezowicz, "Finite Element Analysis of Fixation System Influence on the Thoracolumbar Spine Stability", Applied Mechanics and Materials, Vol. 821, pp. 685-692, 2016