北京生物医学工程

颈椎三维有限元模型的建立

Establishment of a three-dimensional finite element model for the cervical spine

作者：薄雪峰陈赞王辉钱秀清黄菊英张昆亚宋红芳刘志成

单位：                      首都医科大学生物医学工程学院（北京100069）        

关键词：颈椎；三维重建；有限元模型

分类号：

出版年·卷·期（页码）：2014·33·5（452-455）

摘要：

目的建立颈椎(C2~C7)三维有限元模型。方法根据1名既往无颈椎病史健康成年男性志愿者的颈椎断层CT扫描序列图像，采用Mimics13.1、SolidWorks2012软件进行三维重建和造型，利用ANSYS14.0软件，采用四面体网格划分方法，对颈椎及周围组织赋予不同的材料属性，建立颈椎(C2~C7)三维有限元模型。结果本研究成功建立了6个椎体运动节段的三维有限元模型，模型高度模拟颈椎结构与材料特性，单元划分精细。在建立的模型上加载模拟脊柱的前屈、后伸、左右侧曲、左右旋转6种工况下的生理活动，所获得的理论分析结果与参考文献的报道一致。结论建立的颈椎三维有限元模型可进行颈椎生物力学研究。

Objective To establish a three-dimensional finite element model of the cervical spine (C2-C7). Methods A three dimensional finite element model of the cervical spine was established from the CT scan images of a healthy male with Mimics13.1, SolidWorks2012, and ANSYS14.0 software. Different material was assigned different mechanical parameter, and we created a cervical three-dimensional finite element model based on the method of tetrahedral mesh. Results The three dimensional finite element model with more structure integrity and geometric similarity was compartmentalized subtly. After setting the boundary, as the established model in flexion, extension, left and right lateral bending, left and right rotation, theoretical analysis results and data were highly consistent with related literature in biomechanics. Conclusions The three-dimensional finite element model of the cervical spine can be used in biomechanics study of cervical spine.

参考文献：

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Li Bin, Zhao Wenzhi, Chen Bingzhi, et.al. Establishment and validation of a three-dimensional finite element model of the cervical spine. Journal of Clinical Rehabilitative Tissue Engineering Research, 2010, 14(13):2299-2302.
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