横韧带损伤的上颈椎不稳定三维有限元模型的建立研究

发布时间：2018-05-01 16:14

本文选题：寰椎横韧带 + 上颈椎　；参考：《重庆医学》2017年11期

【摘要】：目的建立高仿真度的横韧带损伤的上颈椎(C_1~C_2)不稳定三维有限元模型。方法选取健康成年男性志愿者1名,对上颈椎进行薄层C_T检查,图片采用Dicom形式存储。将图片文件导入Mimics10.0三维重建软件,勾选出上颈椎的骨结构外形,以此重建三维几何。使用Freefrom 5.0结构优化软件对几何模型进行处理后录入Ansys10.0有限元软件,重建出上颈椎(C_1~C_2)的骨性有限元模型。根据相关数据资料构建各韧带结构。在建立完善的正常模型上通过删除寰椎横韧带的单元结构模拟相应损伤,以此建立横韧带损伤的上颈椎不稳定三维有限元模型,并对模型进行网格划分。结果建立了具有高仿真度的横韧带损伤的上颈椎(C_1~C_2)不稳定三维有限元模型,整个模型共有58 360个节点和31 020单元。结论建立的横韧带损伤的上颈椎(C_1~C_2)不稳定三维有限元模型具有较高的真实性,可以用于相关试验研究。
[Abstract]:Objective to establish a three-dimensional finite element model for unstable upper cervical vertebra C _ 1 C _ (2) with high imitation transverse ligament injury. Methods A healthy adult male volunteer was selected and the upper cervical vertebrae were examined by thin layer CT. The images were stored in the form of Dicom. The image file was imported into Mimics10.0 3D reconstruction software and the bone structure of upper cervical vertebrae was selected to reconstruct 3D geometry. The geometric model was processed by Freefrom 5.0 structure optimization software and the Ansys10.0 finite element software was used to reconstruct the bony finite element model of the upper cervical spine C1C _ (2). The structures of ligaments were constructed according to the relevant data. By removing the unit structure of the transverse ligament of atlas to simulate the corresponding injury, a three-dimensional finite element model of instability of the upper cervical vertebrae was established on a perfect normal model, and the model was meshed. Results the unstable 3D finite element model of the upper cervical spine was established. The model was composed of 58,360 nodes and 31,020 elements. Conclusion the unstable 3D finite element model of the upper cervical spine C _ 1C _ 1 C _ (2) with transverse ligament injury is reliable and can be used in the related experimental study.
【作者单位】：成都中医药大学附属医院骨科;广州军区武汉总医院骨科;南方医科大学广东省生物力学重点实验室;
【基金】：全军医学科学研究“十一五”计划攻关课题(08G031)
【分类号】：R687

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