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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationBioceramics 24
Pages279-284
Number of pages6
Edition1
DOIs
Publication statusPublished - Jan 1 2013
Event24th Symposium and Annual Meeting of International Society for Ceramics in Medicine, ISCM 2012 - Fukuoka, Japan
Duration: Oct 21 2012Oct 24 2012

Publication series

NameKey Engineering Materials
Number1
Volume529-530
ISSN (Print)1013-9826

Other

Other24th Symposium and Annual Meeting of International Society for Ceramics in Medicine, ISCM 2012
CountryJapan
CityFukuoka
Period10/21/1210/24/12

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All Science Journal Classification (ASJC) codes

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

Cite this

Sato, T., Nakashima, Y., Akiyama, M., Yamamoto, T., Mawatari, T., Itokawa, T., ... Iwamoto, Y. (2013). Comparison of polyethylene wear between highly crosslinked and annealed UHMWPE and conventional UHMWPE against ceramic heads in total hip arthroplasty. In Bioceramics 24 (1 ed., pp. 279-284). (Key Engineering Materials; Vol. 529-530, No. 1). https://doi.org/10.4028/www.scientific.net/KEM.529-530.279