JaLCDOI 10.18926/AMO/30721
FullText URL fulltext.pdf
Author Inoue, Atsushi| Asaumi, Koji| Endo, Hirosuke| Fujiwara, Kazuo| Mitani, Shigeru| Ozaki, Toshifumi|
Abstract The present retrospective study assessed radiographs to determine socket wear in total hip arthroplasty (THA) with 22-mm zirconia or COP (Cobalt-Chrome alloy rich in Cobalt and Phosphorous) heads, and in cemented stems at more than 10 years after operation. Sockets of ultra high molecular weight polyethylene were used in each of two THA groups (13 hips each) in a clinical trial in our hospital between 1989 and 1990. Three observers carried out masked assessments of the radiographs. Upon fi nal examination, there was no remarkable loosening in the zirconia or COP group, and no case had required revision surgery as of 2005. There was a statistically signifi cant diff erence between the 2 groups in average annual linear wear, at 0.093 mm/year and 0.046 mm/year in the zirconia and COP groups, respectively. Volume wear and average annual volume wear were also signifi cantly greater in the zirconia group despite its superior mechanical strength and toughness in vitro. Our present fi ndings do not confi rm early expectations of lower wear in long-term results of 22-mm zirconia femoral heads used in THA.
Keywords total hip arthroplasty zirconia head COP head polyethylene wear
Amo Type Original Article
Published Date 2006-12
Publication Title Acta Medica Okayama
Volume volume60
Issue issue6
Publisher Okayama University Medical School
Start Page 311
End Page 318
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 17189974
Web of Science KeyUT 000243019000002
Author Tanaka, Masato| Sugimoto, Yoshihisa| Misawa, Haruo| Takahata, Tomohiro| Ozaki, Toshifumi|
Published Date 2010-04-01
Publication Title 岡山医学会雑誌
Volume volume122
Issue issue1
Content Type Journal Article
Author Mimura, Hidefumi| Fujiwara, Hiroyasu| Hiraki, Takao| Gobara, Hideo| Shibamoto, Kentaro| Kimata, Yoshihiro| Ozaki, Toshifumi| Sasaki, Satoru| Kanazawa, Susumu|
Published Date 2010-04-01
Publication Title 岡山医学会雑誌
Volume volume122
Issue issue1
Content Type Journal Article
Author 尾﨑 敏文|
Published Date 2006-01-04
Publication Title 岡山医学会雑誌
Volume volume117
Issue issue3
Content Type Journal Article
Author Kunisada, Toshiyuki| Ozaki, Toshifumi|
Published Date 2008-05-01
Publication Title 岡山医学会雑誌
Volume volume120
Issue issue1
Content Type Journal Article
FullText URL K000901.pdf
Author Ozaki, Toshifumi|
Published Date 1991-03-28
Content Type Thesis or Dissertation
Grant Number 甲第901号
Granted Date 1991-03-28
Thesis Type Doctor of Philosophy in Medical Science
Grantor 岡山大学
language 日本語