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

这项研究的目的是进行京都大学，利兹大学和布拉德福德大学之间的联合研究，以阐明该联合研究的自然和人工关节成员的润滑机制访问了日本或英国进行共同讨论。此外，在访问期间，在国际会议上，即在国际会议上，即在国际生物力学工程新领域的国际会议上进行了本研究，JSME，JSME，JSME，第一世界摩擦学大会和世界医学物理学和生物医学工程的世界大会。根据猪关节的摆测试和Langmui的滑动测试，讨论了多模润滑的弹性流体动力润滑和对摩擦行为的实验评估的数值分析。通过模拟器测试评估了步行过程中某些关节模型中的流体膜形成，并与数值结果进行了比较。在边界润滑能力上，使用不同浓度的氢硝酸钠溶液来阐明磷脂和蛋白质的有效性。在人造关节中的润滑机制上，膝关节假体模型中的流体膜形成，摩擦或磨损，其合规性软骨，例如聚氨酯，硅胶橡胶，聚乙烯基醇（PVA）水凝胶和半纤维纤维纤维培养网络（SIPN）水凝胶的水凝胶通过Sumultor或Sumulidited Testss评估。椭圆形连接的膝关节假体在步行横向设计过程中与具有相同接触区域的纵向设计时，在流体膜形成和摩擦行为中表现出了优越性。根据在步行条件下对流体膜形成的数值分析进行了讨论。通过模拟器测试评估了由金属或陶瓷和超高分子量聚乙烯组成的现有人造关节的摩擦和磨损。夏季化了材料特性，几何设计和润滑剂对流体膜形成的影响。较少的