中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (29): 4629-4633.doi: 10.3969/j.issn.2095-4344.2015.29.008

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

膝关节骨性关节炎生物力学模型及其软骨表面应力分析

金哲峰1,刘爱峰1,王  平1,张君涛1,李远栋1,张  超1,刘世珑1,王志强2   

  1. 1天津中医药大学第一附属医院骨伤科,天津市  300193;
    2天津中医药大学研究生院,天津市  300193
  • 出版日期:2015-07-09 发布日期:2015-07-09
  • 通讯作者: 王志强,硕士,医师,天津中医药大学研究生院,天津市 300193
  • 作者简介:金哲峰,男,1979年生,内蒙古自治区通辽市人,朝鲜族,2008年中国中医科学院毕业,硕士,主治医师,主要从事骨科生物力学及细胞分子生物学的研究。
  • 基金资助:

    国家自然科学基金(81102607)

A biomechanical model of knee osteoarthritis and stress characteristics on the cartilage surface 

Jin Zhe-feng1, Liu Ai-feng1, Wang Ping1, Zhang Jun-tao1, Li Yuan-dong1, Zhang Chao1, Liu Shi-long1,Wang Zhi-qiang2   

  1. 1Department of Orthopedics and Traumatology, First Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China; 
    2School of Graduate, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
  • Online:2015-07-09 Published:2015-07-09
  • Contact: Wang Zhi-qiang, Master, Physician, School of Graduate, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
  • About author:Jin Zhe-feng, Master, Attending physician, Department of Orthopedics and Traumatology, First Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81102607

摘要:

背景:膝关节骨性关节炎主要以软骨退变,骨质增生进而影响到关节周围软组织致关节疼痛,负重后加重以及后期致关节变形的慢性疾病。
目的:实验收集膝关节骨性关节炎患者及正常人的膝关节影像学参数,再先后导入各种软件建立模型,然后在模型上模拟膝关节下蹲动作,并收集下蹲过程中膝关节骨性关节炎患者及正常人膝软骨表面的应力数据,并将两者进行对比从而得出膝关节骨性关节炎患者软骨表面应力特征。
方法:收集膝关节骨性关节炎患者及正常人各30例,通过影像学CT,MRI检查获得数据,将得到的数据通过Mimics软件、Simpleware软件分析后建立模型,通过模型获得膝关节软骨应力相关数据,最后进行膝关节骨性关节炎患者与正常人数据的对比分析,分析总结得出膝关节骨性关节炎患者关节软骨的应力特点。
结果与结论:膝关节骨性关节炎患者从站立到下蹲过程中膝软骨表面应力一般呈现非线性递增趋势。膝关节骨性关节炎患者下蹲过程中膝软骨表面中间外侧应力应力高于正常人体组(P < 0.05),而其下蹲过程中膝软骨表面靠近远端应力及前后侧应力与正常人相比差异无显著性意义(P > 0.05)。结果证实,成功建立膝关节骨性关节炎肌骨模型和有限元模型,建立的模型更接近真实膝关节的运动特征,通过模型为膝关节骨性关节炎疾病提供膝部组织定量的生物力学数据。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

关键词: 组织构建, 软骨组织工程, 膝关节骨性关节炎, 生物力学模型, 软骨应力特征, 有限元, 三维运动捕捉系统, 肌骨模型, 表面肌电图, 人体物理机械特性建立软件, 国家自然科学基金

Abstract:

BACKGROUND: Knee osteoarthritis is a chronic disease characterized as cartilage degeneration and hyperostosis to impact the soft tissues around the joints, thereby resulting in joint pain, and it can be aggravated and lead to joint deformity after weight-bearing.
OBJECTIVE: On the basis of imaging parameters of knee osteoarthritis patients and normal controls, a model was established. And then, knee squatting movement was simulated on the model and stress data from the cartilage surface of patients and normal controls were collected and compared, thereby to obtain the stress characteristics of the cartilage surface in knee osteoarthritis patients.
METHODS: There were 30 knee osteoarthritis patients and 30 healthy volunteers in the study. CT and MRI data from these participants were collected and analyzed using Mimics software and simpleware software to establish a model. Based on this model, cartilage-related stress data were harvested from knee osteoarthritis patients and 
healthy volunteers and compared to summarize the stress characteristics of the articular cartilage in patients with knee osteoarthritis.
RESULTS AND CONCLUSION: In knee osteoarthritis patients, the stress on the cartilage surface from standing to squatting was increased in a nonlinear manner. During the process of squatting, the mediolateral stress was higher in the knee osteoarthritis patients than healthy controls (P < 0.05); however, there was no difference in the proximodistal and anteroposterior cartilage surface stress between the two groups (P > 0.05). These findings indicate that the knee osteoarthritis musculoskeletal model and finite element model are established successfully, and these models are closer to the real motion characteristics of the knee joints, based on which, quantitative biomechanical data of the knee can be provided for knee osteoarthritis treatment. 

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

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