Establishment Of Three-dimensional Finite Element Model Of The Proximal Femur Of Normal Person And Study On Stress Distribution Of Normal Proximal Femur Under Double Legs Standing

Objectivc: To establish a three-dimensional finite e1ement model of the proximal femurof normal person, and simulate loading under normal double legs standing to analyzestfCss distriblltion of proximal femur which can be used as basic materials to furtherimPlemellt finite element analysis of the locus.Mcthods: Proximal femur in vivo was used as specimen. CT scan and configurationdigitalization teclmique were used tO obtan three-dimensiona1 coordinate of proximalfemu which then are inPut tO ANSYS software of finite element analysis. At last, theiMt three-dimensional finite element model of proximal femur of normal person isbuilt, and simuate adding loads to femur head under normal double legs standing toanalyze Stress distribution of proximal femurRcsults: The three-dimensional finite elemellt model estab1ished possesses thefolloWng traits: Geometry shaPe and reduction property of material character is ideal,size of mesh can be freely changed to some extent by researchers to meet the demands,which is fully able to cope with finite elemeni analysis. The stress distfibution isreasonable, and corresponding relationship between structure and funtion is testified.ConcIusion: It is reliable and accurate to build three-dimensional finite elemellt modelwith CT scan data .The indirect method is simPler and more emcient than the direct one,and hard tO err. Three-dimensional finite elemeflt analysis is a kind of convenient andpracticable methOd to research biomechanics of hUman being, in addition, can be usedas the confirmation and suPplement of experiment biomechhacs study...