Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Effect of Stem Design on Contact Pressure and Stress Distribution of End-of-stem in Revision TKR

슬관절 재전치환술용 경골 삽입물 형상이 주대 말단부의 접촉압력과 응력 분포에 미치는 영향

  • 김윤혁 (경희대학교 테크노공학대학, 산학협력기술원) ;
  • 권오수 (카톨릭의대 의정부 병원) ;
  • 박시몬 (경희대학교 대학원 기계공학과)
  • Published : 2006.11.01
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Abstract

In this study, the effect of stem-end design on contact pressure and stress distribution in revision TKR was investigated using finite element method. The finite element model of tibia, including the cortical bone, the cancellous bone and canal, was developed based on CT images. The implant models with various stem lengths, diameters, friction coefficients, and press-fit effects were considered. The results showed that the longer stem length, the stronger press-fit, the bigger stem diameter, and the higher friction coefficient increased both peak contact pressure and Von-Mises stress distributions. The results supported the clinical hypothesis that peak contact pressure and stress are related to the stem end pain. The results of this study will be useful to design the stem and reduce the end-of-stem pain in revision TKR.

Keywords

References

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