逆动力学步态仿真髌股关节生物力学有限元分析

唐班鸿; 阿依古丽·喀斯木; 乌日开西·艾依提; 周文正

doi:10.13568/j.cnki.651094.651316.2023.03.11.0001

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逆动力学步态仿真髌股关节生物力学有限元分析

更新时间：2026-01-21

- 逆动力学步态仿真髌股关节生物力学有限元分析
- Journal of Xinjiang University (Natural Science Edition in Chinese and English) Vol. 40, Issue 6, Pages: 756-763(2023)
- 作者机构：
  
  1. 新疆大学机械工程学院
  2. 新疆维吾尔自治区人民医院骨科中心
- 作者简介：
- 基金信息：
- DOI：10.13568/j.cnki.651094.651316.2023.03.11.0001
  CLC： R318.01
- Published：2023
- 稿件说明：
移动端阅览
[1]唐班鸿,阿依古丽·喀斯木,乌日开西·艾依提,等.逆动力学步态仿真髌股关节生物力学有限元分析[J].新疆大学学报(自然科学版)(中英文),2023,40(06):756-763.
[1]唐班鸿,阿依古丽·喀斯木,乌日开西·艾依提,等.逆动力学步态仿真髌股关节生物力学有限元分析[J].新疆大学学报(自然科学版)(中英文),2023,40(06):756-763. DOI： 10.13568/j.cnki.651094.651316.2023.03.11.0001.

DOI：10.13568/j.cnki.651094.651316.2023.03.11.0001.

摘要

为了分析髌骨脱位患者行走步态下的髌股关节内生物力学表现，建立了健康髌股关节、Ⅰ度髌骨脱位和Ⅱ度髌骨脱位的髌股关节有限元模型，利用逆动力学仿真输出了步态周期中所需的关节力与肌肉力作为有限元分析载荷边界条件，并计算分析步态支撑期内3组模型在4种屈膝角度（10°、20°、26°、30°）时刻的髌股关节应力分布和接触面积．研究结果表明髌股关节间过大的接触应力和接触面积的减小是导致膝前痛患者出现疼痛和代偿性步态的原因，Ⅱ度髌骨脱位患者症状更为严重．4种角度下Ⅰ度髌股脱位关节股骨侧的关节间应力峰值为8.67 MPa，髌骨侧为10.56 MPa，相比健康关节分别增加了354%和293%；Ⅱ度髌股脱位关节股骨侧的关节间应力峰值为14.27 MPa，髌骨侧为14.88 MPa，相比健康关节分别增加了647%和453%；在取得应力峰值的角度下Ⅰ度髌骨脱位和Ⅱ度髌骨脱位模型的关节间接触面积分别是健康关节的29.12%和25.41%；异常的关节间接触面和过高的关节间应力导致髌骨脱位模型的应力峰值屈膝角度由20°变为30°，并引起关节软骨退变．

Abstract

To analyze the biomechanical performance of patellofemoral joint in patients with patellar dislocation during gait cycle

the patellofemoral joint finite element models of healthy patellofemoral joint

Ⅰ-degree patellar dislocation and Ⅱ-degree patellar dislocation were established. The joint force and muscle force required in the gait cycle were output by inverse dynamics simulation as the load boundary conditions of finite element analysis

and the patellofemoral joint stress distribution and contact area of three groups of models at four knee flexion angles(10°

20°

26°

30°) during the gait support period were calculated and analyzed. The results showed that the excessive contact stress between patellofemoral joints and the reduction of contact area were the causes of pain and compensatory gait in patients with anterior knee pain

and the symptoms of patients with Ⅱ-degree patellar dislocation were more serious. The peak interarticular stress of the patellofemoral joint with Ⅰ-degree dislocation at four angles was 8.67 MPa on the femoral side and 10.56 MPa on the patellar side

which increased by 354% and 293% compared to healthy joints; The peak inter joint stress with Ⅱ-degree dislocation was 14.27 MPa on the femoral side and 14.88 MPa on the patellar side

which increased by 647% and 453% compared to healthy joints;At the angle of obtaining peak stress

the inter joint contact areas of Ⅰ-degree patellar dislocation and Ⅱ-degree patellar dislocation models were 29.12% and 25.41% of those of healthy joints; Abnormal indirect contact surface of the joint and excessive inter joint stress lead to a peak stress in the patellar dislocation model

with the knee flexion angle changing from 20°to 30°

and cause joint cartilage degeneration and causes joint cartilage degeneration.

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references

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