Incremental Element Deletion-Based Finite Element Analysis of the Effects of Impact Speeds, Fall Postures, and Cortical Thicknesses on Femur Fracture
The proximal femur’s numerical simulation could give an effective method for predicting the risk of femoral fracture. However, the majority of existing numerical simulations is static, which does not correctly capture the dynamic properties of bone fractures. On the basis of femoral fracture analysi...
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MDPI AG
2022-04-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/8/2878 |
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| author | Yangyang Cui Dingding Xiang Liming Shu Zhili Duan Zhenhua Liao Song Wang Weiqiang Liu |
| author_facet | Yangyang Cui Dingding Xiang Liming Shu Zhili Duan Zhenhua Liao Song Wang Weiqiang Liu |
| author_sort | Yangyang Cui |
| collection | DOAJ |
| description | The proximal femur’s numerical simulation could give an effective method for predicting the risk of femoral fracture. However, the majority of existing numerical simulations is static, which does not correctly capture the dynamic properties of bone fractures. On the basis of femoral fracture analysis, a dynamic simulation using incremental element deletion (IED)-based finite element analysis (FEA) was developed and compared to XFEM in this study. Mechanical tests were also used to assess it. Different impact speeds, fall postures, and cortical thicknesses were also studied for their implications on fracture types and mechanical responses. The time it took for the crack to shatter was shorter when the speed was higher, and the crack line slid down significantly. The fracture load fell by 27.37% when the angle was altered from 15° to 135°, indicating that falling forward was less likely to cause proximal femoral fracture than falling backward. Furthermore, the model with scant cortical bone was susceptible to fracture. This study established a theoretical foundation and mechanism for forecasting the risk of proximal femoral fracture in the elderly. |
| first_indexed | 2024-03-09T10:31:48Z |
| format | Article |
| id | doaj.art-27a2e7fa480046a9bffb333595f4bf44 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T10:31:48Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-27a2e7fa480046a9bffb333595f4bf442023-12-01T21:11:25ZengMDPI AGMaterials1996-19442022-04-01158287810.3390/ma15082878Incremental Element Deletion-Based Finite Element Analysis of the Effects of Impact Speeds, Fall Postures, and Cortical Thicknesses on Femur FractureYangyang Cui0Dingding Xiang1Liming Shu2Zhili Duan3Zhenhua Liao4Song Wang5Weiqiang Liu6Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, ChinaSchool of Mechanical Engineering and Automation, Northeastern University, Shenyang 110057, ChinaDepartment of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo 1138656, JapanTsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, ChinaKey Laboratory of Biomedical Materials and Implant Devices, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, ChinaKey Laboratory of Biomedical Materials and Implant Devices, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, ChinaTsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, ChinaThe proximal femur’s numerical simulation could give an effective method for predicting the risk of femoral fracture. However, the majority of existing numerical simulations is static, which does not correctly capture the dynamic properties of bone fractures. On the basis of femoral fracture analysis, a dynamic simulation using incremental element deletion (IED)-based finite element analysis (FEA) was developed and compared to XFEM in this study. Mechanical tests were also used to assess it. Different impact speeds, fall postures, and cortical thicknesses were also studied for their implications on fracture types and mechanical responses. The time it took for the crack to shatter was shorter when the speed was higher, and the crack line slid down significantly. The fracture load fell by 27.37% when the angle was altered from 15° to 135°, indicating that falling forward was less likely to cause proximal femoral fracture than falling backward. Furthermore, the model with scant cortical bone was susceptible to fracture. This study established a theoretical foundation and mechanism for forecasting the risk of proximal femoral fracture in the elderly.https://www.mdpi.com/1996-1944/15/8/2878fracturefemurfinite element analysisnumerical simulationfalling parameters |
| spellingShingle | Yangyang Cui Dingding Xiang Liming Shu Zhili Duan Zhenhua Liao Song Wang Weiqiang Liu Incremental Element Deletion-Based Finite Element Analysis of the Effects of Impact Speeds, Fall Postures, and Cortical Thicknesses on Femur Fracture Materials fracture femur finite element analysis numerical simulation falling parameters |
| title | Incremental Element Deletion-Based Finite Element Analysis of the Effects of Impact Speeds, Fall Postures, and Cortical Thicknesses on Femur Fracture |
| title_full | Incremental Element Deletion-Based Finite Element Analysis of the Effects of Impact Speeds, Fall Postures, and Cortical Thicknesses on Femur Fracture |
| title_fullStr | Incremental Element Deletion-Based Finite Element Analysis of the Effects of Impact Speeds, Fall Postures, and Cortical Thicknesses on Femur Fracture |
| title_full_unstemmed | Incremental Element Deletion-Based Finite Element Analysis of the Effects of Impact Speeds, Fall Postures, and Cortical Thicknesses on Femur Fracture |
| title_short | Incremental Element Deletion-Based Finite Element Analysis of the Effects of Impact Speeds, Fall Postures, and Cortical Thicknesses on Femur Fracture |
| title_sort | incremental element deletion based finite element analysis of the effects of impact speeds fall postures and cortical thicknesses on femur fracture |
| topic | fracture femur finite element analysis numerical simulation falling parameters |
| url | https://www.mdpi.com/1996-1944/15/8/2878 |
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