Prediction of stress distribution in the ceramic femoral head after total hip replacement
- Prediction of stress distribution in the ceramic femoral head after total hip replacement
- 한성민; 추준욱; 송강일; 박성희; 최재봉; 김정성; 서준교; 최귀원; 윤인찬
- Total hip replacement (THR); ceramic femoral head; finite element method (FEM); 인공고관절 치환술; 세라믹 대퇴골두; 유한요소법
- Issue Date
- 한국정밀공학회지; Journal of the Korean Society of Precision Engineering
- VOL 29, NO 6, 680-685
- 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.
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