Zhang Ming-cai, Lü Si-zhe, Cheng Ying-wu, Gu Li-xu, Zhan Hong-sheng, Shi Yin-yu, Wang Xiang, Huang Shi-rong
Department of Orthopedics and Trauma, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200021, China.
Zhongguo Gu Shang. 2011 Feb;24(2):128-31.
To study the effect of vertebrae semi-dislocation on the stress distribution in facet joint and interuertebral disc of patients with cervical syndrome using three dimensional finite element model.
A patient with cervical spondylosis was randomly chosen, who was male, 28 years old, and diagnosed as cervical vertebra semidislocation by dynamic and static palpation and X-ray, and scanned from C(1) to C(7) by 0.75 mm slice thickness of CT. Based on the CT data, the software was used to construct the three dimensional finite element model of cervical vertebra semidislocation (C(4)-C(6)). Based on the model,virtual manipulation was used to correct the vertebra semidislocation by the software, and the stress distribution was analyzed.
The result of finite element analysis showed that the stress distribution of C(5-6) facet joint and intervertebral disc changed after virtual manipulation.
The vertebra semidislocation leads to the abnormal stress distribution of facet joint and intervertebral disc.
采用三维有限元模型研究颈椎半脱位对颈椎病患者小关节和椎间盘应力分布的影响。
随机选取1例28岁男性颈椎病患者，经动静触诊及X线诊断为颈椎半脱位，采用层厚0.75mm的CT从C1至C7进行扫描。基于CT数据，利用软件构建颈椎半脱位（C4-C6）的三维有限元模型。基于该模型，利用软件进行虚拟操作以纠正椎体半脱位，并分析应力分布。
有限元分析结果显示，虚拟操作后C5-6小关节和椎间盘的应力分布发生改变。
椎体半脱位导致小关节和椎间盘应力分布异常。
