Image-Based Finite Element Modeling for the Descriptions of Bone Failure Behaviors

In recent years, the incidence of proximal femoral fracture has increased year by year. The types of proximal femoral fracture are associated with falling posture, loading speed and osteoporosis degree. In order to understand the mechanism and classification of proximal femoral fracture, numerical simulation can be used to explore the influence of falling direction, loading speed and osteoporosis degree on mechanical parameters and crack propagation path of femur and prosthesis in patients with femoral fracture and patients with proximal femoral fracture after implantation. Methods: The CT data of a healthy human femur was imported into Mimics 16.0 software to initially establish the femoral model and the femoral model after implantation. The model was imported into Hypermesh software for processing. Then the K file generated in the Hypermesh software was imported into the LS-DYNA for calculation. Results: The crack propagation paths, fracture loads and fracture time of the femoral model and the femoral model after implantation were different under different fall directions, loading speeds and osteoporosis degree. This study can provide a reference for further understanding of the pathogenesis of proximal femoral fracture and provide a theoretical basis for clinical practice.