Proceedings of the KOSOMBE Conference (대한의용생체공학회:학술대회논문집)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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A Finite Element Analysis of the Effects of Necrotic Area on Stresses in Early Osteonecrosis of Femoral Head

대퇴 골두내 무혈성괴사 영역에 따른 응력변화 분석 -3차원 유한요소법을 이용한 분석-

  • Kang, S.B. (Biomedical Research Center, KIST) ;
  • Joo, W. (Biomedical Research Center, KIST) ;
  • Kim, Y.M. (Department of Orthopedic Surgery, Seoul National University College of Medicine) ;
  • Kim, H.J. (Department of Orthopedic Surgery, Seoul National University College of Medicine) ;
  • Choi, J.B. (Biomedical Research Center, KIST) ;
  • Choi, K. (Biomedical Research Center, KIST)
  • 강승백 (한국과학기술연구원 의과학연구센터) ;
  • 주원 (한국과학기술연구원 의과학연구센터) ;
  • 김영민 (서울대학교 의과대학 정형외과학교실) ;
  • 김희중 (서울대학교 의과대학 정형외과학교실) ;
  • 최재봉 (한국과학기술연구원 의과학연구센터) ;
  • 최귀원 (한국과학기술연구원 의과학연구센터)
  • Published : 1996.11.15
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Abstract

Using FEM, we analyzed the stress changes on early osteonecrosis of femoral head as the necrotic area increases. A 3D FEM model of proximal femur was made from the CT scam data of fresh frozen adult proximal femur with the material properties from literature. The model consisted of 5994 elements and 5275 nodes. FE analyses were peformed using MSC/NASTRAN. At normal states, stress transmission is mainly along the primary compression trabeculae(PCT). Until 60% involvement of PCT with necrotic lesion, stress transmission is still along the remained PCT. When the PCT involvement is from 60% to 85%, stress transmission is along the PCT and margin of the necrotic lesion. When involvement is more than 85%, stress is mostly transferred to posterior part of femoral head.

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