Evaluation of biomechanical properties of anterior atlantoaxial transarticular locking plate system using three-dimensional finite element analysis

被引：38

作者：

Cai, Xian-hua ^{[1
]}

Liu, Zhi-chao ^{[1
]}

Yu, Yang ^{[1
]}

Zhang, Mei-chao ^{[2
]}

Huang, Wei-bing ^{[1
]}

机构：

[1] Wuhan Gen Hosp Guangzhou Command, Dept Orthoped, Wuhan 430070, Peoples R China

[2] Southern Med Univ, Dept Anat, Guangzhou 510515, Guangdong, Peoples R China

来源：

EUROPEAN SPINE JOURNAL | 2013年 / 22卷 / 12期

关键词：

Atlantoaxial fusion; Anterolateral retropharyngeal approach; Biomechanics; Finite element analysis; UPPER CERVICAL-SPINE; SCREW FIXATION; TECHNICAL DESCRIPTION; FUSION; INSTABILITY; C1-C2; STABILIZATION; DISLOCATION; COMPLICATIONS; REDUCTION;

D O I：

10.1007/s00586-013-2887-1

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

100204 [神经病学];

摘要：

To evaluate a new anterior atlantoaxial transarticular locking plate system using finite element analysis. Thin-section spiral computed tomography was performed from occiput to C-2 region. A finite element model of an unstable atlantoaxial joint, treated with an anterior atlantoaxial transarticular locking plate system, was compared with the simple anterior atlantoaxial transarticular screw system. Flexion, extension, lateral bending, and axial rotation were imposed on the model. Displacement of the atlantoaxial transarticular screw and stress at the screw-bone interface were observed for the two internal fixation systems. Screw displacement was less using the anterior atlantoaxial transarticular locking plate system compared to simple anterior atlantoaxial transarticular screw fixation under various conditions, and stability increased especially during flexion and extension. The anterior atlantoaxial transarticular locking plate system not only provided stronger fixation, but also decreased screw-bearing stress and screw-bone interface stress compared to simple anterior atlantoaxial transarticular screw fixation.

引用

页码：2686 / 2694

页数：9

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