TRIBOLOGICAL PROPERTIES OF DEGENERATE SYNOVIAL JOINTS
Journal Title: Tribologia - Year 2012, Vol 245, Issue 5
Abstract
Joint cartilage in the human body is one of those elements that is most vulnerable to overload and degenerative changes. These changes are influenced by factors such as traffic accidents, lack of physical activates or metabolic disturbances. In this paper, the results of research aimed at the determination of the degeneration rate of the cartilage of a human joint on its tribological properties are presented. This experimental research was carried out using physical models. To carry out this research, a test stand modelling a fundamental scheme of loading and motion for the knee joint had been constructed. The measurements of the friction moment were realised for the fluctuate motion, with the proceeding of the time of rolling- sliding fluid friction. The research was realised for load force Fn = 0÷105[N]. (Sliding velocity vs = {0, 3, 6, 9}[mm/s], and the speed of rotation in measuring point ω = 0.33[s-1]) The specimen and counter specimen used in the testing are in sliding/rolling contact, which reflects, to a maximum degree possible, the relative motion of frictional surfaces in a joint. The results of this research were used for the evaluation of the influence of degenerative changes on tribological changes in the joint cartilage.
Authors and Affiliations
Czesław Koziarski, Tomasz Trzaskacz, Zbigniew Ferenc
Keywords
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