膝关节半月板三维有限元模型的动态仿真生物力学分析
发布时间：2018-08-07 09:58
【摘要】：背景:目前虽然膝关节半月板三维有限元生物力学分析的研究已有报道,对半月板的生物力学变化过程有了一定的认识,但动态仿真模拟在同一载荷条件下屈曲过程中膝关节半月板生物力学分析的报道较少。目的:应用有限元法动态仿真模拟并分析不同屈曲角度下膝关节半月板的生物力学特性。方法:基于正常成人志愿者膝关节MRI数据,运用医学有限元仿真软件Mimics 10.01及逆向工程软件Rapidform XOR3重建全膝关节半月板三维有限元模型,并运用高级有限元分析软件Abaqus 6.10-1仿真模拟分析该模型在承载300 N垂直载荷下屈曲过程中的生物力学变化。结果与结论:(1)膝关节屈曲0°,30°,60°,90°时,随着角度的增加,最大应力点从内侧半月板后角胫骨附着面前缘移动到外侧半月板前角胫骨附着面后缘,且外侧半月板应力范围大于内侧半月板;(2)膝关节屈曲0°,30°,60°,90°时,随着角度的增加,最大位移点从接近内侧半月板内缘中点的地方移动到外侧半月板前外上缘,且外侧半月板的位移范围较内侧半月板位移大;(3)结果提示,半月板是膝关节屈曲过程中主要的承重结构,运动过程中外侧半月板的损伤率大于内侧半月板,与此处应力及位移较大有关。
[Abstract]:Background: although the research of three-dimensional finite element biomechanical analysis of meniscus of knee joint has been reported, there is a certain understanding of the process of biomechanical change of meniscus. However, there are few reports on biomechanical analysis of knee meniscus in the process of buckling under the same load. Aim: to simulate and analyze the biomechanical characteristics of knee meniscus with different flexion angles by finite element method (FEM). Methods: based on the MRI data of knee joint of normal adult volunteers, the three dimensional finite element model of meniscus of total knee joint was reconstructed by medical finite element simulation software Mimics 10.01 and reverse engineering software Rapidform XOR3. The biomechanical changes of the model under 300N vertical load are analyzed by using the advanced finite element analysis software Abaqus 6.10-1. Results and conclusion: (1) with the increase of angle, the maximum stress point moved from the anterior edge of the tibial attachment to the posterior edge of the anterior angle of the lateral meniscus when the flexion of the knee joint was 0 掳~ 30 掳~ 60 掳~ 90 掳, and the maximum stress point moved from the anterior angle of the medial meniscus to the posterior edge of the tibial attachment. The stress range of lateral meniscus was larger than that of medial meniscus. (2) with the increase of angle, the maximum displacement point of lateral meniscus moved from the point near the middle point of medial meniscus to the anterior and upper edge of lateral meniscus when the flexion of knee joint was 0 掳~ 30 掳~ 60 掳~ 90 掳. The displacement range of lateral meniscus is larger than that of medial meniscus. (3) the results suggest that meniscus is the main load-bearing structure in the flexion of knee joint, and the damage rate of lateral meniscus during exercise is greater than that of medial meniscus. It is related to the greater stress and displacement here.
【作者单位】： 昆明医科大学第一附属医院麻醉科;常州市第四人民医院骨科;
【基金】：常州市科技局应用基础研究计划项目(CJ20130049)~~
【分类号】：R684;R318.01
[Abstract]:Background: although the research of three-dimensional finite element biomechanical analysis of meniscus of knee joint has been reported, there is a certain understanding of the process of biomechanical change of meniscus. However, there are few reports on biomechanical analysis of knee meniscus in the process of buckling under the same load. Aim: to simulate and analyze the biomechanical characteristics of knee meniscus with different flexion angles by finite element method (FEM). Methods: based on the MRI data of knee joint of normal adult volunteers, the three dimensional finite element model of meniscus of total knee joint was reconstructed by medical finite element simulation software Mimics 10.01 and reverse engineering software Rapidform XOR3. The biomechanical changes of the model under 300N vertical load are analyzed by using the advanced finite element analysis software Abaqus 6.10-1. Results and conclusion: (1) with the increase of angle, the maximum stress point moved from the anterior edge of the tibial attachment to the posterior edge of the anterior angle of the lateral meniscus when the flexion of the knee joint was 0 掳~ 30 掳~ 60 掳~ 90 掳, and the maximum stress point moved from the anterior angle of the medial meniscus to the posterior edge of the tibial attachment. The stress range of lateral meniscus was larger than that of medial meniscus. (2) with the increase of angle, the maximum displacement point of lateral meniscus moved from the point near the middle point of medial meniscus to the anterior and upper edge of lateral meniscus when the flexion of knee joint was 0 掳~ 30 掳~ 60 掳~ 90 掳. The displacement range of lateral meniscus is larger than that of medial meniscus. (3) the results suggest that meniscus is the main load-bearing structure in the flexion of knee joint, and the damage rate of lateral meniscus during exercise is greater than that of medial meniscus. It is related to the greater stress and displacement here.
【作者单位】： 昆明医科大学第一附属医院麻醉科;常州市第四人民医院骨科;
【基金】：常州市科技局应用基础研究计划项目(CJ20130049)~~
【分类号】：R684;R318.01
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