FEM Analysis of Complex Lumbar Spinal Stenosis Decompression and Intervertebral Fusion
1
Citation
0
Reference
0
Related Paper
Citation Trend
Abstract:
This study is aimed to establish accurate FE model of complete lumbar spine with complex lumbar spinal stenosis(LSS) and conduct comparasion and analysis with normal model and decompression treated model.Patients with complex LSS were selected for the collection of the CT scan data.Using special modeling system,the lumbar was meshing adaptively and auxiliary tissues were created interactively.The complete FE model of Lumbar with complex LSS as well as normal models was generated.Same boundary conditions were applied.Results showed that the active movement range of complex LSS decreased about 20%,but the decompression model increased about 40%,the model with lag screw increased about 25%,and the model with intervertebral fusion was stiffer than normal model.The stress in the decompression model increased about 70%,and the lag screw and intervertebral fusion have obvious decompression effect.The treatment of simple decompression for lumbar spine with complex LSS can release the pain,however may result in unstable and accelerated degeneration.The model with lag screw cannot provide full stability,and the model with intervertebral fusion can provide best treatment.Cite