中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (6): 870-874.doi: 10.12307/2022.168

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

6岁儿童下颈椎有限元模型建立及有效性验证

刘宇航1,周建强2,徐雪彬1,曲星月1,李梓瑜1,李  琨3,王  星3,李志军3,李筱贺3,张少杰3   

  1. 1内蒙古医科大学研究生学院,内蒙古自治区呼和浩特市   010110;2呼和浩特市第一医院,内蒙古自治区呼和浩特市   010030;3内蒙古医科大学基础医学院人体解剖学教研室,内蒙古自治区呼和浩特市   010059
  • 收稿日期:2021-04-22 修回日期:2021-04-24 接受日期:2021-06-05 出版日期:2022-02-28 发布日期:2021-12-07
  • 通讯作者: 张少杰,教授,硕士生导师,内蒙古医科大学基础医学院人体解剖学教研室,内蒙古自治区呼和浩特市 010059
  • 作者简介:刘宇航,男,1995年生,黑龙江省鸡西市人,内蒙古医科大学在读硕士,主要从事儿童颈部解剖结构研究。 周建强,男,1980年生,内蒙古自治区托克托县人,汉族,2020年内蒙古医科大学毕业,硕士,主要从事儿童颈椎化数字学研究。
  • 基金资助:
    国家自然科学基金 (81660358), 项目负责人:张少杰;内蒙古自然科学基金资助项目(2019MS08017),项目负责人:张少杰;国家自然科学基金 (81860382),项目负责人:王星;国家自然科学基金 (81860383),项目负责人:李志军;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(2020LH08021),项目负责人:李志军

Establishment and validation of finite element model of lower cervical spine in 6-year-old children

Liu Yuhang1, Zhou Jianqiang2, Xu Xuebin1, Qu Xingyue1, Li Ziyu1, Li Kun3, Wang Xing3, Li Zhijun3, Li Xiaohe3, Zhang Shaojie3   

  1. 1Graduate School of Inner Mongolia Medical University, Hohhot 010110, Inner Mongolia Autonomous Region, China; 2Hohhot First Hospital, Hohhot 010030, Inner Mongolia Autonomous Region, China; 3Department of Human Anatomy, School of Basic Medicine, Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
  • Received:2021-04-22 Revised:2021-04-24 Accepted:2021-06-05 Online:2022-02-28 Published:2021-12-07
  • Contact: Zhang Shaojie, Professor, Master’s supervisor, Department of Human Anatomy, School of Basic Medicine, Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
  • About author:Liu Yuhang, Master candidate, Graduate School of Inner Mongolia Medical University, Hohhot 010110, Inner Mongolia Autonomous Region, China Zhou Jianqiang, Master, Hohhot First Hospital, Hohhot 010030, Inner Mongolia Autonomous Region, China Liu Yuhang and Zhou Jianqiang contributed equally to this article.
  • Supported by:
    National Natural Science Foundation of China, No. 81660358 (to ZSJ); Inner Mongolia Natural Science Foundation Funded Project, No. 2019MS08017 (to ZSJ); National Natural Science Foundation of China, No. 81860382 (to WX); National Natural Science Foundation of China, No. 81860383 (to LZJ); Inner Mongolia Natural Science Foundation Funded Project, No. 2020MS03061 (to WX); Inner Mongolia Natural Science Foundation, No. 2020LH08021 (to LZJ)

摘要:

文题释义:
有限元模型:通过有限元分析方法建立的有限元模型可进行相关力学模拟,为研究组织损伤提供一种实验模型,并具有可重复性、高仿真性及实验成本低等优点。
有效性验证:验证建立的有限元模型在外力载荷条件下是否仍具有真实结构的生物力学特性。

背景:因儿童颈椎所特有的发育特点及解剖结构的复杂性,儿童颈部有限元模型较少。
目的:建立儿童颈椎三维有限元模型,进行临床术前模拟其颈部力学分析。
方法:采集6岁正常女童尸体标本MSCT扫描的颈椎影像数据,利用Mimics 16.01,Pro/E 5.0,Geomagic Studio 2015,Hypermesh 14.0和Abaqus 6.14等软件构建出正常C3-C7的三维有限元模型,并将所得模型进行各工况位移及活动度验证。研究方案的实施符合内蒙古医科大学的相关伦理要求(医院伦理批件号:YKD2016063,审批时间:2016-03-07),尸体标本由内蒙古医科大学志愿者遗体捐献室提供,供者家属对实验知情同意。
结果与结论:①成功建立正常女童C3-C7椎体三维有限元模型;②构建的儿童颈椎有限元模型在前屈、后伸、左右侧屈、左右旋转工况下椎间活动度结果与已有文献数据吻合,确认模型的有效性;③结果表明,建立的儿童下颈椎有限元模型可为临床颈部术前选择手术方案提供模型参考。

https://orcid.org/0000-0002-2984-3859 (刘宇航) ;https://orcid.org/0000-0002-7583-8807 (周建强)

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: 有限元模型, 生物力学, 颈椎, 应力, 儿童

Abstract: BACKGROUND: There are few finite element models of children’s cervical spine due to the unique developmental characteristics of children’s cervical spine and the complexity of its anatomical structure.  
OBJECTIVE: To establish a three-dimensional finite element model of cervical spine in children to simulate and analyze the neck mechanics before clinical operation.
METHODS:  The cervical spine images of 6-year-old normal girl cadaver specimens were collected. The three-dimensional finite element model of C3-C7 was constructed by using the software of Mimis 16.01, Pro/E 5.0, Geomagic Studio 2015, HyperMesh 14.0, and Abaqus 6.14, and the model was verified by the displacement and activity of each working condition. The protocol was performed in accordance with the relevant ethical requirements of Inner Mongolia Medical University (approval No. YKD2016063; approval date: 2016-03-07). The corpse specimens were provided by the volunteer cadaver donation room of Inner Mongolia Medical University, and the donor’s family members gave informed consent to the experiment.  
RESULTS AND CONCLUSION: (1) The three-dimensional finite element model of C3-C7 vertebrae in normal girls was successfully established. (2) The intervertebral mobility of the finite element model of cervical vertebrae in children under flexion, extension, left and right lateral flexion and left and right rotation conditions was consistent with the existing literature data, which confirmed the effectiveness of the model. (3) The results showed that the established finite element model of lower cervical vertebrae in children could provide model reference for clinical cervical surgery.

Key words: finite element model, biomechanics, cervical spine, stress, child

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