Evaluation of a superior lubrication mechanism with biphasic hydrogels for artificial cartilage |
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| Affiliation: | 1. Research Center for Advanced Biomechanics, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;2. Department of Applied Science for Integrated System Engineering, Graduate School of Engineering, Kyushu Institute of Technology, Japan;3. Department of Mechanical Engineering, Kyushu University, Japan;4. Department of Materials Science & Research Institute of Environment and Information Sciences, Yokohama National University, Japan;1. School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, P. R. China;2. School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou 221116, P. R. China;1. Graduate School of System Design, Tokyo Metropolitan University, Tokyo, Japan;2. Research Institute for Science and Technology, Kogakuin University, Tokyo, Japan;1. Syracuse Biomaterials Institute, Syracuse University, Syracuse, NY 13244, USA;2. Department of Mechanical & Aerospace Engineering, Syracuse University, Syracuse, NY 13244, USA;3. Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, NY 13244, USA |
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| Abstract: | To extend the durability of artificial joints, biomimetic artificial hydrogel cartilage is proposed as a way of improving the lubrication mechanism in artificial joints. The application of hydrogels with properties similar to those of articular cartilage can be expected to duplicate the superior load-carrying capacity and lubricating ability of natural synovial joints. Frictional behaviors with three kinds of poly(vinyl alcohol) (PVA) hydrogels with high water content were examined in reciprocating tests. Interstitial fluid pressure, von Mises stress and fluid flow were compared in biphasic finite element analysis, and frictional behavior was evaluated in terms of biphasic lubrication and surface lubricity. Hybrid gel prepared by a combination of cast-drying and freeze-thawing methods showed superior low friction. |
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| Keywords: | Artificial cartilage Biphasic lubrication Adaptive multimode lubrication Hydrogel |
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