909 頚椎症による脊髄圧迫および後方除圧術による脊柱管拡大に関する研究(GS-2 バイオエンジニアリング(2))

概要

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A numerical simulation was performed to study the spinal cord compression in cervical spondylosis and the effect of expansive laminoplasty by posterior decompression. An axisymmetric finite element model of the spine was presented. The model of the spine was composed of spinal cord that consists of gray and white matter and nerve roots, ossification of the posterior longitudinal ligaments and vertebral arch. We compared simulated stress distribution in spinal cord compressed with ossification of the posterior longitudinal ligament in three cases, using FEM software ANSYS. It was found that the high stress concentrated on the compressed anterior part. The strain distribution result indicated that there was high value in the center and anterior funiculus of the gray matter. The numerical results compared favorably with the experimental data.
社団法人日本機械学会の論文
2004-03-17