A finite element stress analysis of severe intertrochanic fractures treated with artificial femoral head replacement
WANG Yong-Qing, ZHANG Mei-Chao, HUANG Bing-Sheng, CHEN Shun-Yi, CHEN Li-An, ZHONG Shi-Tian, DING Zi-Hai
Chinese Journal of Clinical Anatomy ›› 2013, Vol. 31 ›› Issue (5) : 577-581.
A finite element stress analysis of severe intertrochanic fractures treated with artificial femoral head replacement
Objective To investigate the stress distribution of the femur after artificial femoral head replacement in patients with comminuted intertrochanteric fracture．Methods A volunteer's left femur image data was obtained by spiral CT tomography．Then，the three-dimensional model of the femur was reconstructed with Mimics and Unigraphics modeling software．Based on the above analysis，we established three-dimensional models of comminuted intertrochanteric fracture，short stem prosthesis. Finally, we established the three-dimension finite element model of these materials with software Ansys10.0, and carried out finite element analysis to the model in biomechanics．Results The stress distribution of the femur after standard stem prosthetic replacement did not change significantly．There was no significant stress concentration zone in the reconstruct calcar femorale. Conclusion The stability of prosthesis for intertrochanteric fractures after standard stem prosthesis joint replacement is good, and the artificial joint isstable under normal load.
Intertrochanic comminuted fracture / Artificial femoral head replacement / Finite element stress analysis
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