中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (24): 3773-3778.doi: 10.12307/2021.078

• 数字化骨科 digital orthopedics •    下一篇

有限元动态仿真建立4岁儿童“枕-寰-枢”关节模型

李  琨1 ,李志军1 ,张少杰1 ,高  尚1 ,孙  昊2 ,杨  喜1 ,王  星1 ,戴丽娜1   

  1. 内蒙古医科大学,1人体解剖学教研室,2学生管理处,内蒙古自治区呼和浩特市   010000
  • 收稿日期:2020-07-20 修回日期:2020-07-22 接受日期:2020-10-16 出版日期:2021-08-28 发布日期:2021-03-05
  • 通讯作者: 李志军,教授,博士生导师,内蒙古医科大学基础医学院解剖学教研室,内蒙古自治区呼和浩特市 010059 张少杰,副教授,硕士生导师,内蒙古医科大学基础医学院解剖学教研室,内蒙古自治区呼和浩特市 010059
  • 作者简介:李琨,女,1988年生,汉族,内蒙古自治区呼和浩特市人,硕士,主要从事脊柱与脊髓的数字化研究。
  • 基金资助:
    张少杰;内蒙古医科大学英才培育项目(YCPY20200090,YCPY20200002),项目负责人:李琨;内蒙古医科大学实验室开放项目(2020ZN48),项目负责人:李琨;内蒙古医科大学大学生创新创业项目(20201032001),项目负责人:李琨;内蒙古自然科学基金资助项目(2020MS03061),项目负责人:王星;内蒙古自然科学基金资助项目(2019MS08017),项目负责人:张少杰;内蒙古自治区科技发展计划项目(2019GG158),项目负责人:王星

A 4-year-old child model of occipito-atlanto-axial joints established by finite element dynamic simulation

Li Kun1, Li Zhijun1, Zhang Shaojie1, Gao Shang1, Sun Hao2, Yang Xi1, Wang Xing1, Dai Lina1    

  1. 1Department of Human Anatomy, 2Student Management Office, Inner Mongolia Medical University, Hohhot 010000, Inner Mongolia Autonomous Region, China 
  • Received:2020-07-20 Revised:2020-07-22 Accepted:2020-10-16 Online:2021-08-28 Published:2021-03-05
  • Contact: Li Zhijun, Professor, Doctoral supervisor, Department of Human Anatomy, Inner Mongolia Medical University, Hohhot 010000, Inner Mongolia Autonomous Region, China Zhang Shaojie, Associate professor, Master’s supervisor, Department of Human Anatomy, Inner Mongolia Medical University, Hohhot 010000, Inner Mongolia Autonomous Region, China
  • About author:Li Kun, Master, Department of Human Anatomy, Inner Mongolia Medical University, Hohhot 010000, Inner Mongolia Autonomous Region, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81860382 (to WX); the National Natural Science Foundation of China, No. 81860383 (to LZJ); the National Natural Science Foundation of China, No. 81660358 (to ZSJ); the Talent Cultivation Project of Inner Mongolia Medical University, No. YCPY20200090, YCPY20200002 (to LK); the Laboratory Open Project of Inner Mongolia Medical University, No. 2020ZN48 (to LK); the Innovation and Entrepreneurship Project of Inner Mongolia Medical University, No. 20201032001 (to LK); the Natural Science Foundation of Inner Mongolia Autonomous Region, No. 2020MS03061 (to WX); the Natural Science Foundation of Inner Mongolia Autonomous Region, No. 2019MS08017 (to ZSJ); the Science and Technology Development Plan Project of Inner Mongolia Autonomous Region, No. 2019GG158 (to WX)

摘要:

文题释义:
枕-寰-枢复合体:由 C0-C2的寰枕关节、寰枢正中(寰齿关节)和外侧关节及周围关节软骨、韧带等软组织构成,其为连接颅脑与上颈椎的重要力学结构,结构特殊且功能复杂,可灵活地满足头颈部多维运动并提供必要的力学支撑,以保护生命中枢脑干及周围血管、神经等重要结构。
有限元分析:通过计算机模拟人体解剖结构与各种不同状态下的几何重建及设定,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。

背景:儿童枕-寰-枢关节在形态发育、生理特性等方面有自身的特征,临床损伤较常见。建立有限元模型可更好地了解损伤机制,并为其颅颈交界区疾病的预防、诊治及内固定术器械设计、研发提供理论依据。
目的:建立儿童C0-C2三维有限元模型,为进一步生物力学研究提供实验应用基础。
方法:选择 1 例4岁正常儿童作为实验研究原始数据来源,通过64排螺旋CT薄层扫描获得原始数据,用Mimics、Geomagic Studio、Hypermesh、Abaqus等软件模拟建立C0-C2关节三维有限元模型,并对各方向活动度及力学特征进行验证。 
结果与结论:成功构建了包含韧带的4岁儿童C0-C2三维模型,包括444 927个网格单元,657 617个节点,各方向活动度良好,除C0-C1在前屈及左、右旋转运动度较大外,模型其他各方向运动范围均位于参考值范围。该C0-C2三维有限元模型局部受力及各方向活动度拟真度高,具有较好的几何相似性,模型真实有效。

https://orcid.org/0000-0002-8329-3368 (李琨) 

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

关键词: 有限元, 生物力学, 枕寰枢关节, 力学载荷, 活动度, 解剖结构, 应力, 儿童

Abstract: BACKGROUND: Children’s occipito-atlanto-axial joints have their own characteristics in morphological development and physiological characteristics, and clinical injuries are more common. The establishment of finite element model can better understand the mechanism of injury, and provide a theoretical basis for the prevention, diagnosis and treatment of craniocervical junction disease, as well as the design and development of internal fixation instruments. 
OBJECTIVE: To establish the C0-C2 three-dimensional finite element model for children and to provide experimental application basis for further biomechanical research.
METHODS: A 4-year-old normal child was selected as the experimental source of the original data. The original data were obtained by 64-slice spiral CT scanning. The three-dimensional finite element model of C0-C2 joint was simulated by Mimics, Geomagic Studio, Hypermesh, Abaqus and other software, and the motion range and mechanical characteristics of each direction were verified.
RESULTS AND CONCLUSION: The 4-year old child C0-C2 three-dimensional model containing ligaments was successfully constructed, including 444 927 grid cells and 657 617 nodes. The range of motion in all directions was good, and the range of motion in all directions of the model was located in the reference range except that C0-C1 had a large degree of motion in forward flexion and left and right rotation. The C0-C2 three-dimensional finite element model has high quasi-truth of local force and activity in all directions, and has good geometric similarity, so the model is real and effective.

Key words: finite element, biomechanics, occipito-atlanto-axial joint, mechanical load, range of motion, anatomical structure, stress, children

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