Author(s): GUO Tao, ZHANG Ya-kui, ZHANG Xing-huo, CHENG Wen-hao, ZENG Ji-zhou, Capital Medical University Luhe Teaching Hospital
Pages: 5484-5486
Year: 2015 Issue:  28
Journal: Biomagnetism
Keyword:  Bone mineral density; Hip fractures; Three-dimensional finite element;
Abstract: Objective: To explore the relationship between of the bone mineral density and density of three dimensional finite element model for proximal femoral hip fracture. Methods: 8 cases of senile hip fracture were selected as objects, including 4 cases of femoral neck fracture, 4 cases of femoral intertrochanteric fractures; 3 cases on the right side and 5 on the left side. The bony density of lumbar vertebrae and CT data of bilateral hip joint was measured. Then the contralateral proximal femur was rebuilt using Mimics software and the software of abaqus and the density of the model were calculated. Results: The bony density of lumbar vertebrae in femoral intertrochanteric fracture group was(4.05 + 4.05) g/cm2, and the density of three-dimensional finite element model was(1.15+0.02) ×106, lower than that of the femoral neck fracture group(3.15+3.15) g/cm2,(1.34+0.06)×106, with statistical significance(P<0.05) between two groups. The bony density of lumbar vertebrae had a positive linear correlation with the density of three dimensional finite element model(r=0.881, P=0.881). Conclusions: The bone density has a positive linear correlation with the density of three dimensional finite element model of proximal femoral hip fracture, so it can provide the theoretical basis for the reseach of relationship between the site of elderly hip fracture and bony density by using the finite element analysis.