Effect of Different Postures on Burst Fracture of Thoracolumbar Segment

doi:10.12068/j.issn.1005-3026.2020.04.014

Abstract

Abstract: Based on the statistical results of clinical medicine， a complete and detailed spine finite element model of the T12-L2 thoracolumbar segment was established， and the nonlinear material properties with failure criteria were given to the model to study the biomechanism of spinal burst fractures in different postures. The vertical compressive load was generated by a rigid ball vertically colliding with the thoracolumbar model. Before the collision， the thoracolumbar model was in the upright， forward flexion， and backward extension postures， thereby obtaining the fracture process in three postures and the evaluation parameters of longitudinal height， lateral width， and articular process contact force to evaluate the degree of burst fracture. It was found that in the backward extension posture， the canal stenosis was the most serious in burst fracture.

Key words: finite element method, thoracolumbar segment, burst fracture, impact load, biomechanics

CLC Number:

LI Wu-jie， GUO Li-xin. Effect of Different Postures on Burst Fracture of Thoracolumbar Segment[J]. Journal of Northeastern University Natural Science, 2020, 41(4): 534-540.

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