scholarly journals Evaluation of In Situ and In Vitro Using 3D Finite Element Models Reconstructed from CT Scans with Validation Against Experiments of Proximal Femoral Fracture Load

2020 ◽  
Vol 24 (2) ◽  
Author(s):  
Omid Razmkhah
Keyword(s):  
Finite Element ◽  
Femoral Fracture ◽  
Proximal Femoral Fracture ◽  
Fracture Load ◽  
Ct Scans ◽  
Finite Element Models ◽  
3D Finite Element

scholarly journals Effects of Impact Speeds, Fall Postures and Cortical Thicknesses on Femur Fracture by Incremental Element Deletion Based Finite Element Analysis

2021 ◽  
Author(s):  
Yangyang Cui ◽  
Dingding Xiang ◽  
Liming Shu ◽  
Zhenhua Liao ◽  
Zhilin Zhang ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fracture Risk ◽  
Femoral Fracture ◽  
Femur Fracture ◽  
The Elderly ◽  
Proximal Femoral Fracture ◽  
Loading Test ◽  
Element Analysis

Numerical simulation of the proximal femur could provide an effective approach to predict the femoral fracture risk. However, most of the extant numerical simulations are static simulations, which cannot accurately reflect the dynamic growth process of cracks. In this study, the dynamic simulation by incremental element deletion (IED) based finite element analysis (FEA) was developed on femur fracture analysis and compared with two widly-used approaches (XFEM and USDFLD). It was also evaluated using the in-vitro loading test. Moreover, the effects of different impact speeds, fall postures, and cortical thicknesses on fracture types and mechanical responses were investigated. Impact speeds cause different crack propagation behaviors of the femoral neck. Falling forward was less likely to cause proximal femoral fracture compared with falling backward. The model with thin cortical bone was prone to fracture. These provides a theoretical basis and method for predicting femoral fracture risk in the elderly.

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