Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Mechanical safety evaluation of ceramic ball head for total hip replacement using finite element method

인공고관절 전치환술에서 세라믹 볼 헤드의 기계적 안정성 평가를 위한 유한요소 해석

  • Han, Sung-Min (Biomedical Research Center(Korea Institute of Science and Technology) ;
  • Chu, Jun-Uk (Biomedical Research Center(Korea Institute of Science and Technology) ;
  • Chun, Heoung-Jae (Mechanical Engineering Yonsei University) ;
  • Kim, Jung-Sung (Coren_tec Co. Ltd.) ;
  • Choi, Kui-Won (Biomedical Research Center(Korea Institute of Science and Technology) ;
  • Youn, In-Chan (Biomedical Research Center(Korea Institute of Science and Technology)
  • 한성민 (한국과학기술연구원 의과학연구센터) ;
  • 추준욱 (한국과학기술연구원 의과학연구센터) ;
  • 전흥재 (연세대학교 기계공학과) ;
  • 김정성 ((주)코렌텍) ;
  • 최귀원 (한국과학기술연구원 의과학연구센터) ;
  • 윤인찬 (한국과학기술연구원 의과학연구센터)
  • Received : 2010.05.10
  • Accepted : 2010.11.15
  • Published : 2010.12.31
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Abstract

A ceramic articulating system in total hip replacement thought to be superior to metal-on-polyethylene due to its extremely low coefficient of friction and potential for high resistance to wear. But ceramic is brittle, which makes it mechanically and theoretically susceptible to fracture under certain mechanical conditions. In the current study, nine different models of ceramic ball heads were mechanically evaluated using 3D finite element(FE) analyses. It was found that the maximum stress in all ceramic models was lower than ceramic flexural strength, and it satisfied the requirements of the FDA Gaudience for artificial hip implant. Thus, ceramic ball head models introduced in the current study could be mechanically safe for clinical applications.

Keywords

References

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