[1]丁金勇△ 徐继禧 谭成双 刘俊城 李明波 谢炜星 任东成.腰5-骶1节段关节突关节结构异常的有限元分析[J].中国中医骨伤科杂志,2020,28(09):23-28.
　DING Jinyong XU Jixi TAN Chengshuang LIU Juncheng LI Mingbo XIE Weixing REN Dongcheng.Finite Element Analysis of Abnormal Facet Joint Structure of Lumbar 5-Sacral 1 Segment[J].Chinese Journal of Traditional Medical Traumatology & Orthopedics,2020,28(09):23-28.
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腰5-骶1节段关节突关节结构异常的有限元分析()
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《中国中医骨伤科杂志》[ISSN:1005-0205/CN:42-1340/R]

卷:
第28卷
期数:
2020年09期
页码:
23-28
栏目:
临床研究
出版日期:
2020-09-10

文章信息/Info

Title:
Finite Element Analysis of Abnormal Facet Joint Structure of Lumbar 5-Sacral 1 Segment
文章编号:
1005-0205(2020)09-0023-06
作者:
丁金勇1△ 徐继禧1 谭成双1 刘俊城1 李明波1 谢炜星1 任东成2
1广州中医药大学第一附属医院(广州,510405) 2南方科技大学第二附属医院
Author(s):
DING Jinyong1△ XU Jixi1 TAN Chengshuang1 LIU Juncheng1 LI Mingbo1 XIE Weixing1 REN Dongcheng2
1The First Affiliated Hospital of Guangzhou University of Chinese Medicine,Guangzhou 510405,China; 2The Second Affiliated Hospital of Southern University of Science and Technology,Shenzhen 518000,Guangdong China.
关键词:
腰5-骶1;  关节突关节;  不对称;  有限元;  生物力学
Keywords:
lumbar 5-sacral 1;  facet joint;  asymmetry;  finite element;  biomechanics
分类号:
R681.5
文献标志码:
A
摘要:
目的:建立腰5-骶1关节突关节结构异常的有限元模型,观察关节突关节结构异常对相应节段的生物力学特性的影响。方法:在腰5-骶1节段建立50°关节突关节对称模型(双侧关节突关节分别为50°)、55°关节突关节对称模型(双侧关节突关节分别为55°)、60°关节突关节对称模型(双侧关节突关节分别为60°),以及关节突关节不对称模型(双侧关节突关节分别为50°和60°),在前屈、后伸、侧屈以及旋转的运动状态下,测量椎间盘内最大应力及关节突关节最大接触力。结果:在前屈、旋转状态下,关节突关节不对称模型显著增加了椎间盘内最大应力; 在前屈、后伸、旋转状态下,关节突关节不对称模型显著增加了关节突关节的最大接触力。在前屈状态下,50°对称模型、55°对称模型、60°对称模型的椎间盘内最大应力依次减小; 后伸、侧屈、旋转状态下,这三个模型的椎间盘内最大应力无明显改变; 在前屈及后伸状态下,50°对称模型、55°对称模型、60°对称模型的关节突关节最大接触力依次增加; 侧屈状态下无明显改变; 在旋转状态下,50°对称模型、55°对称模型、60°对称模型的关节突关节最大接触力依次减小。结论:在前屈、后伸、旋转状态下,关节突关节不对称会使相应的腰5-骶1节段受到异常应力,在前屈和旋转状态下,关节突关节角度的改变会引起椎间盘内最大应力及关节突关节最大接触力的改变。
Abstract:
Objective:To establish a finite element model of lumbar 5-sacral 1 joint abnormality and observe the biomechanical effects of abnormal joint structure on this corresponding segments.Methods:Symmetrical model with 50°,55°,60° on both facet joint and asymmetrical model with 50°and 60°each joint were established first.Intervertebral discs inner force and contact force were tested under flexion,extension,lateral flexion and rotational motion.Results:Under flexion and rotation,the facet asymmetrical model significantly increased the maximum stress in the intervertebral disc.In the flexion,extension and rotation,the facet asymmetrical model significantly increased the maximum contact force of the facet joint.In the flexion state the maximum stress in the intervertebral disc with the 50°,55°and 60°facet model gradually decreased.There was no statistically significant different of maximum stress in the intervertebral discs in the posterior extension,lateral flexion and rotation state.In the extended extension state the maximum contact force of the facet joints of the 50°,55°and 60°facet model increased sequentially.There was no significant changed under the lateral flexion state.In the rotated state,maximum contact force of the joint in 50°,55°and 60°facet model were reduced gradually.Conclusion:In the flexion,extension and rotation state,the asymmetry of the facet joint will cause abnormal stress on lumbar 5-sacral 1 segment.In the flexion and rotation state,intervertebral discs inner force and contact force will change if the facet joint angle changed.

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备注/Memo

备注/Memo:
(收稿日期:2019-12-08) 基金项目:广东省科技厅基金项目(2017ZC0137) △通信作者 E-mail:spinegzding@163.com
更新日期/Last Update: 2020-09-10