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Published in:
2012 | OriginalPaper | Chapter
Lumbar Finite Element Analysis and Experimental Study Based on the Biomechanical Properties
Authors : Jianping Wang, Juping Gu, Jian Zhao
Published in: System Simulation and Scientific Computing
Publisher: Springer Berlin Heidelberg
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The objectives of this study were to investigate the stress distribution in the lumbar spine before and after the removal of nucleus pulposus, explore the effects of discectomy on the stress distribution and compare biomechanical experiments results with computer simulation results. Three-dimensional finite element model of lumbar L4-L5 was established, the normal and discectomy disc was simulated, the finite element analysis software Abaqus6.9 was used to study von mises stress on the vertebrae and intervertebral disc. Doing biomechanics experiments with sheep lumbar spine whose anatomy and morphology was similar with people, comparing the stress values of the measurement points with simulation results. After discectomy, the human lumbar annulus stress under flexion had an increase of 13.8%, and the sheep lumbar biomechanical experimental results were consistant with simulation results.