Prediction of stress distribution in the ceramic femoral head after total hip replacement

Title
Prediction of stress distribution in the ceramic femoral head after total hip replacement
Authors
한성민추준욱송강일박성희최재봉김정성서준교최귀원윤인찬
Keywords
Total hip replacement (THR); ceramic femoral head; finite element method (FEM); 인공고관절 치환술; 세라믹 대퇴골두; 유한요소법
Issue Date
2012-06
Publisher
한국정밀공학회지; Journal of the Korean Society of Precision Engineering
Citation
VOL 29, NO 6, 680-685
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.
URI
http://pubs.kist.re.kr/handle/201004/42124
ISSN
12259071
Appears in Collections:
KIST Publication > Article
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