Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Prediction of Stress Distribution in the Ceramic Femoral Head after Total Hip Replacement

인공고관절 치환술 후 세라믹 대퇴골두에서 발생하는 응력분포 예측

  • Han, Sung-Min (Biomedical Research Institute, Korea Institute of Science and Technology) ;
  • Chu, Jun-Uk (Biomedical Research Institute, Korea Institute of Science and Technology) ;
  • Song, Kang-Il (Biomedical Research Institute, Korea Institute of Science and Technology) ;
  • Park, Sung-Hee (Biomedical Research Institute, Korea Institute of Science and Technology) ;
  • Choi, Jae-Bong (Department of Mechanical System Engineering, Hansung Univ.) ;
  • Kim, Jung-Sung (Coren_tec Co. Ltd.) ;
  • Suh, Jun-Kyo Francis (Biomedical Research Institute, Korea Institute of Science and Technology) ;
  • Choi, Kui-Won (Biomedical Research Institute, Korea Institute of Science and Technology) ;
  • Youn, In-Chan (Biomedical Research Institute, Korea Institute of Science and Technology)
  • 한성민 (한국과학기술연구원 의공학연구소) ;
  • 추준욱 (한국과학기술연구원 의공학연구소) ;
  • 송강일 (한국과학기술연구원 의공학연구소) ;
  • 박성희 (한국과학기술연구원 의공학연구소) ;
  • 최재봉 (한성대학교 기계시스템공학과) ;
  • 김정성 ((주) 코렌텍) ;
  • 서준교 (한국과학기술연구원 의공학연구소) ;
  • 최귀원 (한국과학기술연구원 의공학연구소) ;
  • 윤인찬 (한국과학기술연구원 의공학연구소)
  • Received : 2011.12.29
  • Accepted : 2012.02.29
  • Published : 2012.06.01
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Abstract

Ceramic femoral heads are now widely used in Total Hip Replacement (THR). Due to their high biocompatibility and low ductility, ceramic femoral heads are considered to be suitable for young and active patients. However, as in testing the mechanical stability of the femoral head, the conventional proof test (standard ISO 7206-10) has its limit of showing axisymmetric stress distribution on the contact surface, while non-uniformed stress distribution is expected after THR. Since non-uniformed stress distribution can result in the increased probability of ceramic femoral head fracture, it is considerable to evaluate the stress distribution in vivo-like conditions. Therefore, this study simulated the ceramic femoral heads under in vivo-like conditions using finite element method. The maximum stress decreased when increasing the size of the femoral head and stress distribution was concentrated on superior contact surface of the taper region.

Keywords

References

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