Establishment and validation of the three dimensional finite element model of atlantoaxial vertebra

GUO Liang; et al

doi:10.13406/j.cnki.cyxb.2010.12.012

您当前的位置：

首页 >

文章列表页 >

Establishment and validation of the three dimensional finite element model of atlantoaxial vertebra

更新时间：2024-01-17

- Establishment and validation of the three dimensional finite element model of atlantoaxial vertebra
- Journal of Chongqing Medical University Vol. 35, Issue 12, Pages: 1847-1850(2010)
- 作者机构：
  
  重庆医科大学附属第一医院骨科
- 作者简介：
- 基金信息：
- DOI：10.13406/j.cnki.cyxb.2010.12.012
  CLC： R687.3
- Published：2010，
扫描看全文
[1]郭亮,权正学,蒋电明,唐可,欧云生,赵增辉.寰枢椎三维有限元模型的建立[J].重庆医科大学学报,2010,35(12):1847-1850.

GUO Liang, et al. Establishment and validation of the three dimensional finite element model of atlantoaxial vertebra. [J]. Journal of Chongqing Medical University 35(12):1847-1850(2010)
[1]郭亮,权正学,蒋电明,唐可,欧云生,赵增辉.寰枢椎三维有限元模型的建立[J].重庆医科大学学报,2010,35(12):1847-1850. DOI： 10.13406/j.cnki.cyxb.2010.12.012.

GUO Liang, et al. Establishment and validation of the three dimensional finite element model of atlantoaxial vertebra. [J]. Journal of Chongqing Medical University 35(12):1847-1850(2010) DOI： 10.13406/j.cnki.cyxb.2010.12.012.

摘要

目的:建立寰枢椎三维有限元模型

为重建寰枢椎的稳定性提供生物力学依据。方法:对颈枕部C0～3标本行CT扫描

获取数据集

通过Mimics10.0软件选取灰度值大于-250 Hu得到C0～3骨和韧带的三维模型

并用Mimics10.0软件对模型进行修饰

以OUT格式导入有限元软件Patran2005中生成四面体网格模型

再输入Mimics软件对模型赋值

完成寰枢椎三维有限元模型

包括密质骨、松质骨及韧带

模型能够高度模拟颈椎结构与材料特性

结构完整

模型节点数9 178

单元数40 356。在模型C3的下缘进行边界约束（六自由度为零）

在C0处进行前屈/后伸、左/右侧弯、左/右旋转方向1.5 Nm的加载

分析寰枢椎之间的三维运动及各部位的应力。并在实验室以相同加载方法下测量其三维运动范围。分别进行统计学分析。结果:寰枢外侧关节面及枢椎体前部是应力集中部位

寰枢椎间的三维运动（前屈/后伸5.48°/9.85°、左/右侧弯4.69°/4.93°、左/右轴向旋转31.28°/30.56°）与实验室测量（前屈/后伸8.10°/8.49°、左/右侧弯4.79°/4.93°、左/右轴向旋转28.2°/29.3°）相当。结论:利用Mimics和Patran2005建立寰枢椎有限元模型

具有较高的真实性和精确度

能够模仿寰枢椎生物力学分析。

Abstract

Objective:Toestablish the three dimensional(3D)finite elementmodel(FEM)ofatlantoaxialvertebra(AAV)in order to provide the biomechanical base for the stability of atlantoaxial reconstruction.Methods:After the occipitocervical specimen(C0～3)was scanned on a spiral computed tomography

the scanning data were collected

and then inputted into software Mimics 10.0 to extract the 3D model of C0～3 bone and ligament by gray scale more than-250 Hu

and then was remodeled.Subsequently

it was imported with the finite element analysis(FEA)software Patran2005 by the OUT format to produce tetrahedron grid(TG)model.Then the TG model was inputted into software Mimics10.0 again and the material parameter was distributed.So 3D FEM of AAV was completed

which included cortical bone

cancellous bone and ligament.It highly simulated the integrated structure and material property of AAV.The node and element number of this model was 9 178 and 40 356 respectively.The C3s’ inferior boarder of the model was restrained(six-freedom-degree was zero).The 3D range of motion(3DM)C1 relative to C2 was measureda

nd the stress of various sections of AAV was analysed by loading 1.5 Nm at C0 under the conditions of flexion/extension

left/right lateral bending

and left/right axial rotation by Patran2005.3DM C1 relative to C2 was measured under similar loading method in laboratory.Then data in the two groups were collected and statistically analysed.Results:The lateral facets of atlantoaxial joint and the anterior part of C2 body were the stress concentration regions and also high bone mineral density regions.3DM C1 relative to C2 on FEA(flexion/extension

5.48°/9.85°

left/right lateral bending

4.69°/4.93°

and left/right axial rotation

31.28°/30.56°)was similar to the experiment(flexion/extension

8.10°/8.49°l

eft/right lateral bending

4.79°/4.93°l

eft/right axial rotation

28.2° /29.3°).Conclusion:The 3D FEM of AAV

constructed by combined usage of Mimics and Patran2005i

s valid and accurate

and can mimic the biomechanical studies of AAV.

关键词

寰枢椎生物力学有限元分析重建

Keywords

Atlantoaxial vertebraBiomechaniecsfinite element analysisreconstruction

references

Views

129

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Biomechanical study of fixation stability with anterior approach screw fixation through C₂ vertebral body to C₁ lateral mass and Gallie’s technique

Comparison of different treatment methods for Vancouver type B2 fracture based on finite element analysis

Related Author

欧云生

et al

GUO Liang

Yu LI

Shanwen XU

Jiangliang SONG

Sanqing SU

Yuanzhao HUANG

Related Institution

Department of Orthopdics,the First Affiliated Hospital,Chongqing Medical University

School of Civil Eng., Xi’an Univ. of Architecture and Technol.

School of Civil Eng., Southwest Jiaotong Univ.

Department of Orthopedics,China National Petroleum Corporation Central Hospital

Department of Invasive Technology,China National Petroleum Corporation Central Hospital

⁰