Abstract：Objective To establish a three-dimensional finite element model of femur using the finite element code Ansys,and to confirm and calculate the precise bone mineral density.Methods Bone mineral density was detected in 12 complete and fresh femurs from adult corpses using authentic measurement method(authentic measurement group) and finite element analysis(finite element analysis group).Experimental procedures in authentic measurement group included high-speed thin-section CT scan,compilation of mask files,preliminary three-dimensional reconstruction,treatment for surface smoothness,output of the femoral three-dimensional model,partition of grid under command stream of Ansys,achievement of material properties in Mimics,completion and analysis of finite element modeling,running file 2 and file 3 under command stream of Ansys,achievement of the volume and value,statistics of volume using Excel,calculation of material mass by the volume multiplying the relevant density value,achievement of the volume in Mimics,calculation of mineral density value.In authentic measurement group,true density value was obtained after precise measurement of femur weight with an electronic balance.One-way ANOVA was performed to compare data between the two groups.Results Fast establishment of three-dimensional finite element model of femur was achieved and simple finite element analysis was completed.There was no significant difference in bone density between the two groups(P=0.447).Conclusion Three-dimensional finite element can be effectively established by using files under command stream of Ansys.The bone mineral density can be precisely obtained with the establishment of finite element model.
郑锋； 张国栋； 陈宣煌； 林海滨； 吴献伟. 股骨三维有限元快速建模及骨密度值求解的初步研究[J]. 南昌大学学报（医学版）, 2012, 52(03): 17-.
ZHENG Feng,ZHANG Guo-dong,CHEN Xuan-huang,LIN Hai-bin,WU Xian-wei. Fast Establishment of Three-dimensional Finite Element Model of Femur and Measurement of Bone Mineral Density. , 2012, 52(03): 17-.
2012, Vol. 52 
