Quantitative evaluation of wear property of polyethylene-on-ceramic sliding pairs for joint prostheses in multidirectional sliding test

Yoshinori Sawae, Teruo Murakami, Takanori Sawano, Iwao Noda, Toshihiko Shimotoso

Research output: Contribution to journalConference articlepeer-review

Abstract

The wear property of polyethylene-on-ceramic sliding pairs for joint prostheses was evaluated quantitatively and compared with polyethylene-on-metal sliding pairs. The multidirectional sliding wear test with a newly developed pin-on-plate test apparatus was used in this study as a new screening method for the tribological investigation of prosthetic joint materials. In this method, the ultra-high molecular weight polyethylene (UHMWPE) pin specimen was moved along the two-dimensional sliding pathway to simulate the multidirectional sliding motion of joint prostheses and to reproduce the clinically relevant wear behavior of UHMWPE. Therefore, the polyethylene wear rate became significantly higher in this method compared with the negligible and unrealistic wear in the conventional pin-on-disk wear test. Results of the wear test indicate that the wear property of UHMWPE-on-ceramic is better than that of UHMWPE-on-metal, and also shows that our new zirconia ceramics, HTOZ, has preferable tribological characteristics.

Original languageEnglish
Pages (from-to)665-668
Number of pages4
JournalKey Engineering Materials
Volume218-220
Publication statusPublished - Jan 1 2002
Event14th International Symposium on Ceramics in Medicine-Annual Meeting of the International Society for Ceramics in Medicine BIOCERAMICS'01 (ISCM) - Palm Springs, CA, United States
Duration: Nov 14 2001Nov 17 2001

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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