Finite element biomechanical analysis of mushroom shaped surface prosthesis of femoral head
- VernacularTitle:蘑菇状股骨头表面置换体生物力学有限元分析
- Author:
Quanzhang JIA
;
Guangyu ZHANG
;
Haidong GU
- Publication Type:Journal Article
- Keywords:
osteonecrosis of the femoral head;
surface replacement;
stress-shelter;
biomechanics
- From:
Orthopedic Journal of China
2006;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective]To test and prove the mushroom shaped surface prosthesis of femoral head not only can be a weight-bearing device,but also could reduce stress-shelter and achieve long-term stability.[Method]A simplified three-dimensional model of femoral head was made.And the biomechanics of femoral head were compared by finite element analysis in two states:with and without the replacement.[Result]It showed that the maximum of strees in famoral head was less than 40Mpa,consequently the replacement had sufficient strength to meet its basic function.Furthermore,the prosthesis bear the force both at up part and down.Therefore it reduced stress-shelter.[Conclusion]This prosthesis can achieve immediate and long-term stability.And it provides new ideas for designing the femoral head resurfacing prosthesis.
