Lubrication Mechanism in Natural and Artificial Joints

自然关节和人工关节的润滑机制

基本信息

批准号：
07044159
负责人：
MURAKAMI Teruo
金额：
$ 4.16万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

项目摘要

The object of this research is to conduct the joint research between Kyushu University, The University of Leeds and University of Bradford to elucidate the lubrication mechanism in natural and artificial jointsMembers of this joint research visited Japan or United Kingdom for mutual discussion. Furthermore, during their visiting the presentations of papers on this research project were carried out at the international conferences, i.e., at the International Conference on New Frontiers in Biomechanical Engineering, JSME,the First World Tribology Congress and the World Congress on Medical Physics and Biomedical Engineering.In this joint study, the following results were shown.On the lubrication mechanism in natural synovial joints, the fundamental mechanism in adaptive multimode lubrication was discussed on the basis of numerical analysis of elastohydrodynamic lubrication and experimental evaluation of frictional behavior by pendulum tests of porcine joints, and sliding tests for Langmui … More r-Blodgett film or artificial materials against articular cartilage. Fluid film formation in some joint models during walking was evaluated by simulator tests and compared with numerical results. On boundary lubricating ability, the effectiveness of phospholipids and proteins was clarified by using saline solutions of different concentration of sodium hyaluronate.On the lubrication mechanism in artificial joints, the fluid film formation, friction or wear in knee prosthesis models with compliant artificial cartilage such as polyurethane, silicone rubber, polyvinylalcohol (PVA) hydrogel and semi-interpenetrating network (SIPN) hydrogel were evaluated by sumulator or sliding tests. The knee prostheses of elliptical conjunction showed superiority in fluid film formation and frictional behavior during walking for transverse design to longitudinal one with the same contact area. This fact was discussed based on numerical analysis of fluid film formation under walking condition. The friction and wear in existing artificial joints composed of metal or ceramics and ultra-high molecular weight polyethylene were evaluated by simulator tests. The influence of material properties, geometrical design and constituents of lubricants on fluid film formation were summerized. Less

本研究的目的是进行九州大学、利兹大学和布拉德福德大学的联合研究，以阐明自然关节和人工关节的润滑机制。此外，该联合研究的成员访问了日本或英国进行了相互讨论。访问该研究项目的论文在国际会议上发表，即生物机械工程新前沿国际会议、JSME、第一届世界摩擦学大会和世界医学物理与生物医学工程大会。在这项联合研究中，取得了以下成果。关于自然滑膜关节的润滑机制，在弹流润滑数值分析和实验评估的基础上，讨论了自适应多模式润滑的基本机制。通过猪关节的摆锤测试和 Langmui … More r-Blodgett 薄膜或人造材料对关节软骨形成的滑动测试来研究摩擦行为。通过模拟器测试评估步行时的一些关节模型，并与数值结果进行比较，使用不同浓度的透明质酸钠盐溶液阐明磷脂和蛋白质的有效性。在人工关节的润滑机制上，流体。具有顺应性人工软骨（如聚氨酯、硅橡胶、聚乙烯醇 (PVA) 水凝胶和半互穿材料）的膝关节假体模型中的薄膜形成、摩擦或磨损通过模拟器或滑动测试对椭圆形连接的膝关节假体进行了评估，横向设计的膝关节假体在行走过程中比具有相同接触面积的纵向假体表现出优越性。通过模拟试验评估了金属或陶瓷和超高分子量聚乙烯组成的现有人工关节在步行条件下液膜形成的摩擦和磨损情况，研究了材料性能、几何设计和润滑剂成分对摩擦和磨损的影响。流体膜的形成进行了较少的总结。