中国组织工程研究

中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (39): 7263-7267.doi: 10.3969/j.issn.2095-4344.2012.39.010

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

有限元分析Ilizarov技术对肘膝关节屈伸挛缩畸形矫正器作用的机制

秦大平1，张晓刚2，宋 敏1，武生智3，曹林忠2   

  1. 1甘肃中医学院，甘肃省兰州市 730000
    2甘肃中医学院附属医院，甘肃省兰州市 730020
    3兰州大学土木工程学院，甘肃省兰州市 730000
  • 收稿日期:2012-01-19 修回日期:2012-02-25 出版日期:2012-09-23 发布日期:2012-09-23
  • 通讯作者: 张晓刚，主任医师，教授，硕士生导师，甘肃中医学院附属医院，甘肃省兰州市 730020 zxg0525@163.com
  • 作者简介:秦大平★，男，1982年生，甘肃省兰州市人，甘肃中医学院在读硕士，主要从事外用药及外固定器械对于骨伤科疾病的研究及治疗研究。 qindaping888666@163.com

Action mechanism of Ilizarov technique in deformity correction device for elbow and knee flexion extension contracture by finite element analysis

Qin Da-ping1, Zhang Xiao-gang2, Song Min1, Wu Sheng-zhi3, Cao Lin-zhong2   

  1. 1Gansu College of Traditional Chinese Medicine, Lanzhou 730000, Gansu Province, China
    2Affiliated Hospital of Gansu College of Traditional Chinese Medicine, Lanzhou 730020, Gansu Province, China
    3Department of Engineering Mechancis,Lanzhou University ,Lanzhou 730000, Gansu Province, China
  • Received:2012-01-19 Revised:2012-02-25 Online:2012-09-23 Published:2012-09-23
  • Contact: Zhang Xiao-gang, Chief physician, Master’s supervisor, Professor, Affiliated Hospital of Gansu College of Traditional Chinese Medicine, Lanzhou 730020, Gansu Province, China ZXG0525@163.com
  • About author:Qin Da-ping★, Studying for master’s degree, Gansu College of Traditional Chinese Medicine, Lanzhou 730000, Gansu Province, China qindaping888666@163.com

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632

被引次数

4

摘要：

背景：目前国内外鲜见采用有限元法分析Ilizarov技术在骨科疾病肢体延长及对关节挛缩外固定器的作用机制。
目的：利用三维有限元分析Ilizarov技术对肘膝关节屈伸挛缩畸形矫正器的作用机制。
方法：利用Ilizarov生物学理论设计出的符合人体生物力学特性和可以广泛应用于临床的关节挛缩矫正器。通过三维有限元分析应用Ilizarov技术在肘膝关节屈伸挛缩畸形矫正器设计中的力学有效性和科学性。
结果与结论：建立了几何外型逼真、生物力学特性全面的肘膝关节三维有限元模型。通过三维有限元模型及力学分析计算出各组织包括骨与软组织的弹性模量和泊松比等力学指标，可通过施加关节挛缩矫正器的载荷分析其关节内、外的应力-应变分布及变化情况。Ilizarov技术可对肘膝关节挛缩畸形矫正器的设计与优化改良提供理论依据，利用有限元力学分析揭示了肘膝关节屈伸挛缩畸形病变组织结构的生物力学变化中的机制。

关键词: Ilizarov技术, 肘膝关节屈伸挛缩畸形, 矫正器, 作用机制, 有限元

Abstract:

BACKGROUND: At present, few researches have reported the effect mechanism of IIizarov technique in orthopedic disorders limb lengthening and joint contracture external fixation device by finite element analysis.
OBJECTIVE: To analyze the effect mechanism of Ilizarov technique in deformity correction device for elbow and knee flexion extension contracture by three-dimensional finite element analysis.
METHODS: The joint contracture correction device based on the human body biomechanical properties which can be widely applied to clinical treatment was established by IIizarov biological theory. The mechanical effect and scientificity of Ilizarov technique in the designing of the deformity correction device for elbow and knee flexion extension contracture were analyzed by three-dimensional finite element.
RESULTS AND CONCLUSION: A three-dimensional finite element model of elbow and knee joints with realistic appearance and full biomechanical properties were established. The mechanical indexes, such as the elastic modulus and Poisson’s ratio of the bone and soft tissue were calculated through the three-dimensional finite element model and the mechanical analysis. Joint internal and external stress-strain distribution and changes were analyzed through imposing load on the joint contracture correction device. Ilizarov technique can provide the theory basis for the designing and optimizing deformity correction device for elbow and knee flexion extension contracture, and the finite element mechanics analysis reveals the biomechanical change mechanism of elbow and knee flexion contracture lesions organizational structure.

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