临床骨科杂志2012，Vol.15Issue(2)：205-209,5.
活体人工髋关节假体植入位置的有限元分析
In vivo analysis of total hip arthroplasty in different input position with finite element method
摘要
Abstract
Objective To establish a three-dimension finite element model with CT scanned pictures of hip arthroplas-ty for analyzing the stress distribution on the femur and on the prosthesis, providing a new method to evaluate the femoral prosthesis in vivo. Methods One volunteer with uncemented prosthesis was scanned with 64 slice CT to obtain configurations. With the software, a three-dimension model of femur with prosthesis was established. Simulating one leg standing state, the stress distribution was analyzed on the femur and on the prosthesis as experimental group. Compared to the experimental group, modifying input position with - 10° , - 5° , + 5° , + 10° , and stimulating the stress distribution with same load, then compared with the stress distribution with the experimental group. Results The finite element model has been established, using the pictures that the prosthesis in the body with CT scan. The experimental group which demonstrated the true position of the prosthesis in the vivo was not the best input position. Conclusions The stress distribution on the model established base on the people with prosthesis can reflect the truly stress after hip replacement. The finite element model established based on the femur prosthesis in vivo can be used to evaluate the position of the prosthesis and can provide help for the clinical.关键词
活体/髋关节假体/CT/成像,三维/有限元分析/模型,生物学/应力/植入位置Key words
in vivo/ total hip arthroplasty/ CT/imaging, three-dimensional/finite element analysis/ models, biological / position分类
医药卫生引用本文复制引用
徐灵军,朱海波,张银网,朱建民,张浩,朱亦,陈云..活体人工髋关节假体植入位置的有限元分析[J].临床骨科杂志,2012,15(2):205-209,5.基金项目
上海交通大学-上海市徐汇区中心医院有限元临床研究中心基金资助(编号:FEM2010001) （编号:FEM2010001）
