Biphasic and boundary lubrication mechanisms in artificial hydrogel cartilage: A review

Teruo Murakami, Seido Yarimitsu, Kazuhiro Nakashima, Nobuo Sakai, Tetsuo Yamaguchi, Yoshinori Sawae, Atsushi Suzuki

Research output: Contribution to journalReview articlepeer-review

28 Citations (Scopus)


Various studies on the application of artificial hydrogel cartilage to cartilage substitutes and artificial joints have been conducted. It is expected in clinical application of artificial hydrogel cartilage that not only soft-elastohydrodynamic lubrication but biphasic, hydration, gel-film and boundary lubrication mechanisms will be effective to sustain extremely low friction and minimal wear in daily activities similar to healthy natural synovial joints with adaptive multimode lubrication. In this review article, the effectiveness of biphasic lubrication and boundary lubrication in hydrogels in thin film condition is focused in relation to the structures and properties of hydrogels. As examples, the tribological behaviors in three kinds of poly(vinyl alcohol) hydrogels with high water content are compared, and the importance of lubrication mechanism in biomimetic artificial hydrogel cartilage is discussed to extend the durability of cartilage substitute.

Original languageEnglish
Pages (from-to)864-878
Number of pages15
JournalProceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine
Issue number12
Publication statusPublished - Dec 1 2015

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering


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