中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (11): 1707-1712.doi: 10.3969/j.issn.2095-4344.0167

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

正常人体C0-T1全颈椎有限元模型的构建及意义

刘伟聪1,陈雄生1,周盛源1,陈 博2,许 政1   

  1. 1上海长征医院骨科,上海市  2000032上海市伤骨科研究所,上海市  200003
  • 出版日期:2018-04-18 发布日期:2018-04-18
  • 作者简介:刘伟聪,男,1981年生,湖南省衡阳市人,汉族,上海长征医院骨科在读博士,主治医师。
  • 基金资助:

    上海市科学技术委员会科研计划项目(15140903800,15DZ1942605)

Establishment and significance of a three-dimension finite element model of the whole cervical spine (C0-T1) in normal human  

Liu Wei-cong1, Chen Xiong-sheng1, Zhou Sheng-yuan1, Chen Bo2,Xu Zheng1   

  1. 1Department of Orthopedics, Shanghai Changzheng Hospital, Shanghai 200003, China; 2Institute of Orthopedics and Traumatology, Shanghai 200003, China
  • Online:2018-04-18 Published:2018-04-18
  • About author:Liu Wei-cong, Doctoral candidate, Attending physician, Department of Orthopedics, Shanghai Changzheng Hospital, Shanghai 200003, China
  • Supported by:

    the Scientific Research Plan Project of Shanghai Science and Technology Commission, No. 15140903800, 15DZ1942605

摘要:

文章快速阅读:

 

 

文题释义:
有限元分析:是生物力学数字模型中的重要研究方法,是通过计算机模拟人体解剖结构及各种不同状态下的几何重建及设定,通过验证后,对椎体和软组织内部结构,包括肌肉、韧带等结缔组织的压力、张力、载荷和形变方面进行模拟。
颈椎生物力学研究模型的种类:主要有4种类型,包括物理实体模型、体外实验模型、体内实验模型及数学模型。
 
摘要
背景:颈椎的脊柱结构单元是退变和创伤的常见发生部位。建立良好的颈椎模型,对研究颈椎在各种条件下的生物力学变化,达到防治颈椎伤病,改善颈治疗方法和疗效有着重要的现实意义。
目的:建立正常人体全颈椎(C0-T1)三维有限元模型,为进一步生物力学研究提供良好的实验应用基础。
方法:选择1位正常健康成人志愿者作为实验研究原始数据来源的对象,将通过256排CT薄层扫描获得的原始数据导入硬盘,使用软件将像素提取并编辑,实施逆向重建,通过模拟计算建立C0-T1全颈椎三维有限元模型,并对各方向活动度及力学特征进行验证。
结果与结论:实验成功构建了包含韧带的全颈椎三维模型,包括208 631个节点和660 876个单元,各方向活动度良好,除了C0-C1活动度稍大之外,其余节段所有的活动度均落在上述文献资料范围内。该全颈椎(C0-T1)三维有限元模型局部受力及各方向活动度拟真程度高,具有很好的几何相似性,模型真实有效。

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程
ORCID: 0000-0001-6917-9203(刘伟聪)

关键词: 颈椎, 数字模型, 生物力学, 有限元, 韧带, 活动度, 逆向重建, 力学载荷, 三维, 终板应力

Abstract:

BACKGROUND: The spine structural unit of the cervical spine is a common site of degeneration and trauma. Establishing a good cervical spine model is of great practical significance for studying the biomechanical changes of cervical vertebrae under various conditions, preventing and treating cervical injuries, and improving the treatment methods of neck and effects. 

OBJECTIVE: To establish a three-dimension finite element model of the whole cervical spine (C0-T1) in normal human and provide a good experimental application basis for further biomechanical research.
METHODS: A healthy adult volunteer was selected as the object for data collection. The original data obtained by 256-row CT thin layer scanning, which then has been extracted and edited by software to implement reverse reconstruction. The three-dimensional finite element model of whole cervical spine (C0-T1) was established by the numerical simulation. The range of motion at various directions and mechanical characteristics were verified.
RESULTS AND CONCLUSION: The model had 208 631 nodes and 660 876 solid elements. The range of motion in all directions was good. In addition to the larger C0-C1 mobility, all the rest of the segmental motions were consistent with previous literatures. The geometric and biomechanics characters of three-dimensional finite element model of the whole cervical spine (C0-T1) were highly similar to the intact one. The validation of the model was positive. 

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Cervical Vertebrae, Biomechanics, Bioengineering, Tissue Engineering

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