中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (48): 7212-7218.doi: 10.3969/j.issn.2095-4344.2016.48.010

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

踝关节胫骨远端关节面缺损生物力学特征的三维有限元分析

宋作成1,闫小龙2   

  1. 1山东大学齐鲁医院南山分院,山东省龙口市 265718;2山东中医药大学附属医院骨科,山东省济南市 250014
  • 修回日期:2016-09-17 出版日期:2016-11-25 发布日期:2016-11-25
  • 通讯作者: 闫小龙,硕士,山东中医药大学附属医院骨科,山东省济南市 250014
  • 作者简介:宋作成,男,1980年生,山东省龙口市人,汉族,主治医师,从事骨科临床工作。
  • 基金资助:

    河北省卫生厅2013年医学科学研究课题(20130192)

Biomechanical characteristics of distal tibial articular surface defect of the ankle joint: three-dimensional finite element analysis

Song Zuo-cheng1, Yan Xiao-long2   

  1. 1Nanshan Branch, Qilu Hospital, Shandong University, Longkou 265718, Shandong Province, China; 2Department of Orthopedics, Affiliated Hospital, Shandong University of Traditional Chinese Medicine, Jinan 250014, Shandong Province, China
  • Revised:2016-09-17 Online:2016-11-25 Published:2016-11-25
  • Contact: Yan Xiao-long, Master, Department of Orthopedics, Affiliated Hospital, Shandong University of Traditional Chinese Medicine, Jinan 250014, Shandong Province, China
  • About author:Song Zuo-cheng, Attending physician, Nanshan Branch, Qilu Hospital, Shandong University, Longkou 265718, Shandong Province, China
  • Supported by:

    the Medical Science Research Project of Health Department of Hebei Province in 2013, No. 20130192

摘要:

文章快速阅读:

 

 

文题释义:
踝关节:是人体负重量最大的屈戌关节。站立时全身质量均落到踝关节上,行走时负重约为体质量的5倍。在日常生活中行走和跳跃活动主要依靠踝关节的背屈、跖屈活动。踝关节骨折尤其是Pilon骨折,如果关节面对位不良或缺损较大,踝穴增宽或变窄,都会引起负重疼痛或/和踝关节失稳,日后必然发生创伤性关节炎、退行性变等。
踝关节生物力学研究:踝关节骨折时,如果缺损比较大或者关节面对位不良,踝穴变窄或者增宽,都会引起踝关节不稳、负重时疼痛,发生退行性变或者创伤性关节炎。因此,对踝关节进行生物力学分析具有重要意义。对踝关节的生物力学研究从最早的足弓印迹法,到后来的复写纸法、压力测定板法、步态分析仪法以及尸体标本实验等,虽然取得了大量有效数据,但仍存在一定缺陷。
 
摘要
背景:研究发现三维有限元分析可以用于踝关节生物力学研究,但关于胫骨远端关节面缺损方面的研究不多。
目的:对踝关节胫骨远端关节面缺损的生物力学特征进行三维有限元分析,为踝关节损伤相关疾病的发生机制提供依据。
方法:建立踝关节的三维有限元模型,设定不同直径的胫骨远端关节面缺损,观察趾屈14°时载荷1 400 N胫骨远端关节面的应力峰值,中立位时载荷700 N胫骨远端关节面的应力峰值,背屈10°时载荷2 100 N胫骨远端关节面的应力峰值,以及胫骨远端关节面不同缺损直径时不同体位胫距关节面的接触面积。
结果与结论:①载荷1 400 N趾屈14°:胫骨远端关节面前外象限应力峰值在关节面缺损直径为8 mm时最小,关节面缺损直径为16 mm时最大;前内象限应力峰值在关节面缺损直径为12 mm时最小,关节面缺损直径在16 mm时最大;后外象限应力峰值在关节面缺损直径为12 mm时最小;后内象限应力峰值在关节面缺损直径为0 mm时最小,关节面缺损直径为16 mm时应力峰值最大;②载荷700 N中立位时,胫骨远端关节面前外、前内、后外和后内象限应力峰值均随着关节面缺损直径的增加而增加,在关节面缺损直径为16 mm时4个象限的应力峰值最大;③载荷2 100 N背屈10°时在关节面缺损直径为16 mm时4个象限的胫骨远端关节面应力峰值均最大;④结果表明,胫骨远端关节面缺损直径不超过12 mm对踝关节功能的影响不大,胫骨远端关节面缺损直径超过12 mm时对踝关节功能的影响比较大。

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:
0000-0001-7154-0483(宋作成)

关键词: 骨科植入物, 数字化骨科, 胫骨远端关节, 关节面缺损, 三维有限元, 生物力学, 踝关节, 趾屈, 背屈

Abstract:

BACKGROUND: Studies found that three-dimensional finite element analysis can be used in the study of ankle biomechanics, but research on distal tibial articular surface defect was few.

OBJECTIVE: To analyze the biomechanics of distal tibial articular surface defect with three-dimensional finite element, and provide the basis for mechanism of ankle injury related diseases.
METHODS: We established ankle three-dimensional finite element model, and set different diameters of distal tibial articular surface defect, observed the peak stress of distal tibial articular surface at load of 1 400 N and the flexor of 14°, at load of 700 N and neutral position, at load 2 100 N and dorsiflexion of 10°, and contact area of tibial astragaloid joint surface at different postures and different defect diameters. 
RESULTS AND CONCLUSION: (1) At load of 1 400 N and plantar flexion of 14°, the distal tibial articular surface front quadrant stress peak was smallest when the distal tibial articular surface defect diameter was 8 mm, and was maximum when defect diameter was 16 mm; the distal tibial articular surface front inner quadrant stress peak was smallest when the distal tibial articular surface defect diameter was 12 mm, and maximum when defect diameter was 16 mm; the distal tibial articular surface posterior quadrant stress peak was smallest when defect diameter was 12 mm, distal tibial articular surface posterior inner quadrant stress peak was smallest when defect diameter was 0 mm; the distal tibial exterior stress peak was maximum when defect diameter was 16 mm. (2) At load of 700 N and neutral position, exterior front quadrant, front inner quadrant, posterior quadrant and posterior inner quadrant stress peaks increased with the distal tibial articular surface defect increases; the distal tibial articular surface defect stress peak was maximum when defect diameter was 16 mm. (3) At load of 2 100 N and dorsiflexion of 10°, the distal tibial articular surface stress peak was maximum when defect diameter was 16 mm. (4) Results showed that distal tibial articular surface defect diameter was not exceeding 12 mm, and has little effect on the function of the ankle joint; defect diameter exceeding 12 mm has great effect on the ankle function.

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: Ankle Joint, Finite Element Analysis, Biomechanics, Tissue Engineering

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