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| Fracture analysis of femoroplasty for the prevention of hip fracture in the elderly |
| SUN Wentao1 LI Pengfei1 LIN Ziling2 HE Xiangxin1 LI Honggeng3 LU Ronggui3 FENG Lianying4 |
1.The First Clinical Medical College, Guangzhou University of Traditional Chinese Medicine, Guangdong Province, Guangzhou 510405, China;
2.Department of Orthopedics, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province, Guangzhou 510405, China;
3.State Key Laboratory of Advanced Design Manufacture for Vehicle Body ,Hunan University, Hu'nan Province, Changsha 410082, China;
4.Pediatric College, Chongqing Medical University, Chongqing 400016, China |
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Abstract Objective To analyze effect of bone cement intervention on osteoporotic hip fracture in elderly patients based on biomechanical simulation of femoral neck fracture before and after femoroplasty. Methods CT image data of one case of femoral neck fracture was collected. Mimics software was used to rebuild the three-dimensional finite element model of femoral. Model was imported in HYPERMESH software for meshing, defining material properties, setting the boundary conditions, loading the force curve and the role of points such as pre-processing, generated model for the control model. In the case of the same boundary conditions, the finite element grid inside the femoral neck region was redefined the material properties, and the generated model was selected as the experimental model. Then the two models were imported into the solver LS-DYNA software for operating respectively, then dynamic fracture processes and Von Mises cloud maps were observed. Results The Von Mises cloud showed a high stress on the femoral neck fracture. There was no obvious fracture line in the femoral neck of the experimental model, and the Von Mises cloud showed a hip bone around the hip stress was significantly lower than the control model. Conclusion From the perspective of biomechanics, femoral angioplasty is feasible and practical for the prevention of osteoporotic femoral neck fractures, and provides reference for clinical application
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