中国组织工程研究

中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (22): 3996-4000.doi: 10.3969/j.issn.1673-8225.2012.22.002

• 数字化骨科 digital orthopedics • 上一篇    下一篇

中下胸椎肋椎单元三维有限元模型的建立☆

赵  岩1，2，江建明1，李筱贺3，霍洪军2，左  媛2，肖宇龙2，杨学军2　   

  1. 1南方医科大学南方医院脊柱骨病外科，广东省广州市  510515；2内蒙古医学院第二附属医院脊柱外科，内蒙古自治区呼和浩特市010030；3内蒙古医学院基础医学院解剖学教研室，内蒙古自治区呼和浩特市010059
  • 收稿日期:2012-02-02 修回日期:2012-03-29 出版日期:2012-05-27 发布日期:2012-05-27
  • 通讯作者: 江建明，教授，主任医师，博士生导师，南方医科大学南方医院脊柱骨病外科，广东省广州市 510515 jjm19991999@sohu.com
  • 作者简介:赵岩☆，男，1977年生，南方医科大学在读博士，主治医师，主要从事脊柱外科的研究。nmgzy4568@126.com

Establishing three-dimensional finite element model of the rib vertebral unit of the middle and

Zhao Yan1,2, Jiang Jian-ming1, Li Xiao-he3, Huo Hong-jun2, Zuo Yuan2, Xiao Yu-long2, Yang Xue-jun2　   

  1. 1Department of Spinal Surgery, Nanfang Hospital of Southern Medical University, Guangzhou  510515, Guangdong Province, China; 2Department of Spinal Surgery, the Second Affiliated Hospital of Inner Mongolia Medical College, Hohhot  010030, Inner Mongolia Autonomous Region, China; 3Department of Anatomy, School of Basic Medicine, Inner Mongolia Medical College, Hohhot  010059, Inner Mongolia Autonomous Region, China
  • Received:2012-02-02 Revised:2012-03-29 Online:2012-05-27 Published:2012-05-27
  • Contact: Jiang Jian-ming. Professor, Chief physician, Doctoral supervisor, Department of Spinal Surgery, Nanfang Hospital of Southern Medical University, Guangzhou 510515, Guangdong Province, China jjm19991999@sohu.com
  • About author:Zhao Yan☆, Studying for doctorate, Attending physician, Department of Spinal Surgery, Nanfang Hospital of Southern Medical University, Guangzhou 510515, Guangdong Province, China; Department of Spinal Surgery, the Second Affiliated Hospital of Inner Mongolia Medical College, Hohhot 010030, Inner Mongolia Autonomous Region, China nmgzy4568@126.com

PDF

358

被引次数

7

摘要：

背景：建立中下胸椎肋椎单元有限元模型对进一步的力学分析意义重大。
目的：通过CT扫描结合逆向工程软件建立中下胸椎肋椎单元三维有限元模型。
方法：选择内蒙古医学院附属第二医院影像科无脊柱疾患和骨质疏松标本1例，利用医学图像处理软件Mimics实现直接从CT图像中提取数据，再利用逆向工程技术平台Geomagic，在可视化的界面下对模型进行修改，建立人完整中下胸椎肋椎单元、椎间盘的有限元模型。
结果与结论：利用Mimics，Geomagic等逆向工程软件，结合CT扫描技术对人中下胸椎肋椎单元进行了三维重建，精确再现了中下胸椎肋椎单元外形解剖特征，实现了对椎体组织内部不同结构的精细区分，中下胸椎肋椎单元共具有132 649个四面体单元。提示此方法可以提高建模的效率和可操作性，能够成功建立符合实验要求的有限元模型。
 

关键词: 中下胸椎肋椎单元, 逆向工程, 有限元, 生物力学, 数字医学

Abstract:

BACKGROUND: It has the great significance to establish the finite element model of the rib vertebral unit of the middle and lower thoracic vertebra for more mechanical analysis.
OBJECTIVE: To establish the three-dimensional finite element model of the rib vertebral unit of the middle and lower thoracic vertebra through the CT scanning combined with reverse engineering software.
METHODS: One case without disorders of spinal and osteoporosis was selected from the Video Branch in the Second Affiliated Hospital of Inner Mongolia Medical College. It was used to establish the human integrity three-dimensional finite element model of the rib vertebral unit of the middle and lower thoracic vertebral and intervertebral discs. The data were extracted directly from CT image by the means of the medical image processing software Mimics, and the model was modified in the visual interface by the means of platform of reverse engineering technology Geomagic. 
RESULTS AND CONCLUSION: The three-dimensional reconstruction of the rib vertebral unit of the middle and lower thoracic vertebral of human was performed through the reverse engineering software including Mimics and Geomagic, and combined with the technology of CT scan. This way reproduced the characters of the appearance and anatomy accurately, and achieved fine distinguish of the internal vertebral structure. There were 132 649 tetrahedral elements in every rib vertebral unit of the middle and lower thoracic vertebra. It suggests that this method can improve the efficiency and maneuverability of the modeling, and can successfully establish the finite element model conforming to the experimental requirements.

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