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| Simulated analysis of older intertrochanteric fractures based on finite element method |
| HE Xiangxin1 LI Pengfei1 LIN Ziling2 SUN Wentao1 CHEN Xinmin1 LIANG Ziyi1 |
1.Guangzhou University of Chinese Medicine, Guangdong Province, Guangzhou 510405, China;
2.First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province, Guangzhou 510405, China |
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Abstract Objective For the blank of finite element model about intertrochanteric fracture, the fracture model of the intertrochanteric fracture based on the finite element analysis softwares, to provide experimental basis for the prevention and treatment of intertrochanteric fracture. Methods From March to April 2017, in First Affiliated Hospital of Guangzhou University of Chinese Medicine, 1 elderly patient with intertrochanteric fracture was selected, the CT image data of the uninjured side was collected, the Mimics software was used to grow the contralateral area, fill the cavity, edit and rebuild the contralateral proximal femur model. Next, preprocessed it by Geomagic studio 2013. Data were imported in Hypermesh 14.0 and LS-DYNA software for meshing, and defining material properties. The failure parameters and interfacial properties were set. The load and force boundary constraints simulating the falling were simulated. The model of intertrochanteric fracture was calculated, then, the Hyper-View 14.0 software was used to check the results. Results The inside of proximal femur was the first appeared stress concentration, under the continuous stress it began to break, fracture line stretched from intside to outside of the upper, ultimately Evans Ⅰ intertrochanteric fracture model would be gained. Conclusion The finite element analysis method based on LS-DYNA software can simulate the dynamic fracture of the intertrochanteric fracture veritably, it provides experimental reference to reveal the mechanism and guides the prevention and the treatment of intertrochanteric fractures.
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