Comparison of polyethylene wear between highly crosslinked and annealed UHMWPE and conventional UHMWPE against ceramic heads in total hip arthroplasty

Taishi Sato, Yasuharu Nakashima, Mio Akiyama, Takuaki Yamamoto, Taro Mawatari, Takashi Itokawa, Masanobu Ohishi, Goro Motomura, Masanobu Hirata, Yukihide Iwamoto

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

The purpose of this study was to examine the effects of ceramic femoral head material on the wear of annealed, crosslinked ultra-high molecular weight polyethylene (UHMWPE) (XLPE) in total hip arthroplasty compared to non-crosslinked conventional UHMWPE (CPE). XLPE was fabricated by crosslinking with 60 kGy irradiation and annealing. Femoral heads made from zirconia and alumina ceramics, and cobalt-chrome (CoCr) of 22 mm or 26 mm diameter were used. In this study, the femoral head penetration into the cup was measured digitally on radiographs of 70 hips with XLPE and 50 hips with CPE. The average follow-up periods were 6.1 and 12.7 years, respectively. The steady wear rate of XLPE was significantly lower than those of CPE (0.002 versus 0.08 mm/year, respectively). Zirconia displayed increased wear rates compared to alumina in CPE; however, there was no difference among head materials in XLPE (0.0028, 0.011 and 0.009 mm/year for zirconia, alumina and CoCr, respectively). Neither head size or implantation period impacted XLPE wear. In contrast to CPE, XLPE displayed low wear rates surpassing the effects of varying femoral head material, size, implantation period and patient demographics.

本文言語英語
ホスト出版物のタイトルBioceramics 24
出版社Trans Tech Publications Ltd
ページ279-284
ページ数6
1
ISBN(印刷版)9783037855171
DOI
出版ステータス出版済み - 2013
イベント24th Symposium and Annual Meeting of International Society for Ceramics in Medicine, ISCM 2012 - Fukuoka, 日本
継続期間: 10 21 201210 24 2012

出版物シリーズ

名前Key Engineering Materials
番号1
529-530
ISSN(印刷版)1013-9826
ISSN(電子版)1662-9795

その他

その他24th Symposium and Annual Meeting of International Society for Ceramics in Medicine, ISCM 2012
国/地域日本
CityFukuoka
Period10/21/1210/24/12

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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