正常人体颈椎间盘的三维有限元分析  

A TRI-DIMENSIONAL FINITE ELEMENT ANALYSIS OF NORMAL HUMAN CERVICAL SPINE INTERVERTEBRAL DISC

作　　者：付裕[1] 阮狄克[2] 刘斌[1] 张沛[1] 李晨光[3] 

机构地区：[1]内蒙古医学院第二附属医院颈椎外科,内蒙古呼和浩特010030 [2]中国人民解放军海军总医院骨科 [3]北京航空航天大学宇航学院

出　　处：《内蒙古医学院学报》2007年第2期94-96,共3页Acta Academiae Medicinae Neimongol

基　　金：内蒙古医学院青年基金项目(NY2006QN003)

摘　　要：目的:研究下颈椎间盘三维有限元模型的建立及其应力分布情况。方法:通过CT扫描、Unigraphics V18.0软件进行影像边界记录、定标等方法,按照点、线、面、体的顺序重建三维结构,采用CAD数据处理技术,输入相关的材料特性,构建下颈椎间盘三维有限元模型。结果:正常椎间盘纤维环在人体直立位、前屈位和后伸位时应力明显集中于后侧与后外侧,平均应力以后伸位最高。当椎间盘变性后,纤维环的平均应力水平比正常时显著降低。结论:建立颈椎间盘三维有限元模型并进行应力分析是可行的,且结果可信。Objective： To evaluate the establishment of tri -dimensional finite element model of normal human low cervical spine intervertebral disc and its stress condition. Methods. CT scanning, image edges recording and other methods were employed to reconstruct tri - dimentional frames in sequence of point,line,face and solid, and mapped -mesh technique was used to obtain the finite element, and commercial software package was used to study the response of the disc model. Results. It is shown that the anulus fibrosus of the normal disc has a high level of stress in the posterior and poster - lateral parts in upright, flexion and extension position, and the average stress in extension is the largest , and that the anulus fibrosus in the degenerative disc has a significantly decreased stress level. Conclusion：Establishing tri - dimensional finite element models of cervical spine disc and analyzing its stress is feasible and the results are confident.

关 键 词：颈椎 椎间盘 三维有限元模型 

分 类 号：R653[医药卫生—外科学]