吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (6): 2319-2324.doi: 10.13229/j.cnki.jdxbgxb20210595

• 农业工程·仿生工程 • 上一篇    

基于内侧半月板结构设计的仿生假体有限元分析

左建林1(),刘恩渤1,贾政斌2,3,徐圣昊1,肖建林1()   

  1. 1.吉林大学中日联谊医院 骨科，长春 130033
    2.北京航空航天大学 生物与医学工程学院，北京 100191
    3.北京航空航天大学 生物力学与力生物学教育部重点实验室，北京 100191
  • 收稿日期:2021-06-30 出版日期:2021-11-01 发布日期:2021-11-15
  • 通讯作者: 肖建林 E-mail:zuojl@jlu.edu.cn;xiaojianlin10@jlu.edu.cn
  • 作者简介:左建林（1975-），男，教授，博士. 研究方向：骨关节与运动医学. E-mail：zuojl@jlu.edu.cn
  • 基金资助:
    吉林省科技发展计划项目(20190304124YY);吉林省卫生科研人才专项项目(2020SCZ63)

Finite element analysis of bionic prosthesis based on design of medial meniscus structure

Jian-lin ZUO1(),En-bo LIU1,Zheng-bin JIA2,3,Sheng-hao XU1,Jian-lin XIAO1()   

  1. 1.Department of Orthopaedics，China-Japan Union Hospital of Jilin University，Changchun 130033，China
    2.School of Biological Science and Medical Engineering，Beihang University，Beijing 100191，China
    3.Key Laboratory for Biomechanics and Mechanobiology，Ministry of Education，Beihang University，Beijing 100191，China
  • Received:2021-06-30 Online:2021-11-01 Published:2021-11-15
  • Contact: Jian-lin XIAO E-mail:zuojl@jlu.edu.cn;xiaojianlin10@jlu.edu.cn

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摘要：

基于人体内侧半月板结构设计了游离式仿生内侧半月板假体，置换临床中无法修复的半月板。通过三维有限元分析方法，对假体进行了力学分析，验证了其可行性。数据结果显示，与健康半月板相比，半月板假体应力较高，两组模型高应力分布区域均在内侧中后部；所设计的半月板假体与健康半月板具有相似的生物力学性能。数据结果验证了假体的主要优势在于，其不需要额外固定模式，因而避免了因假体固定失效造成的失败。

关键词: 仿生工程, 半月板, 生物力学, 有限元分析

Abstract:

Based on the structure of the human medial meniscus, we designed a free bionic medial meniscus prosthesis to replace the irreparable meniscus in clinic treatment. The feasibility of the prosthesis was verified by a three-dimensional finite element analysis method. The data results show higher stresses in the meniscus prosthesis compared to the wholesome meniscus, with the region of high stress distribution in the medial middle and posterior in both models. The results of the study illustrate that the designed meniscus prosthesis has similar biomechanical properties to the healthy meniscus. The main advantage of the data results validating the prosthesis is that no supplementary fixation pattern is required, avoiding failure due to prosthetic fixation failure.

Key words: bionic engineering, meniscus, biomechanics, finite element analysis

中图分类号: 

  • R314

图1

假体概念图"

图2

膝关节几何模型"

表1

膝关节有限元模型信息"

组织结构网格尺寸/mm单元数单元类型
股骨391 384C3D4
股骨软骨194 673C3D4
外侧半月板110 028C3D10
内侧半月板114 332C3D10
内侧半月板假体118 809C3D10H
胫骨软骨145 750C3D4
胫骨345 802C3D4

图3

内侧半月板最大压应力分布情况"

图4

半月板接触应力及压应力数据"

图5

半月板假体位移情况"

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