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In silico biomechanical analysis of poller screw-assisted small-diameter intramedullary nail in the treatment of distal tibial fractures

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机构： [1]National Key Discipline of Human Anatomy, Guangdong Provincial Key Laboratory of Medical Biomechanics, Guangdong Engineering Research Center for the Translation of Medical 3D Printing Applications, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China. [2]Department of Orthopedics and Traumatology, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China. [3]Institute of Biomedical Engineering, Shenzhen Bay Laboratory, Shenzhen, Guangdong, China. [4]Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Guangdong Medical University, Zhanjiang, China. [5]Drug Discovery Center, State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, Guangdong, China.

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关键词： poller screw small-diameter intramedullary distal tibial fractures parallel interfragmentary motion fracture fixation

摘要：

Objective: To evaluate the biomechanical effects of Poller screws (PS) combined with small-diameter intramedullary nails in the treatment of distal tibial fractures at different locations and on different planes. Methods: Nine finite element (FE) models were used to simulate the placement of the intramedullary nail (IMN) and the PS for distal tibial fractures. Structural stiffness and interfragmentary motion (IFM) through the fracture were investigated to assess the biomechanical effects of the PS. The allowable stress method was used to evaluate the safety of the construct. Results: With the axial load of 500 N, the mean axial stiffness of IMN group was 973.38 ± 95.65 N/mm, which was smaller than that at positions A and B of the coronal group and sagittal group (p < 0.05). The shear IFM of the IMN group was 2.10 ± 0.02 mm, which were smaller than that at positions A and B of the coronal group and sagittal group (p < 0.05). Under physiological load, the stresses of all internal fixation devices and the nail-bone interface were within a safe range. Conclusion: In the treatment of distal tibial fractures, placing the PS in the proximal fracture block can obtain better biomechanical performance. The IMN fixation system can obtain higher structural stiffness and reduce the IFM of the fracture end by adding PS.Copyright © 2023 Tan, Yang, Wang, Huang, Ouyang, Zhao, Huang, Deng and Huang.

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出版当年[2022]版：

大类 | 2 区工程技术

小类 | 3 区综合性期刊

最新[2025]版：

大类 | 3 区生物学

小类 | 3 区生物工程与应用微生物 4 区工程：生物医学

第一作者：

第一作者机构： [1]National Key Discipline of Human Anatomy, Guangdong Provincial Key Laboratory of Medical Biomechanics, Guangdong Engineering Research Center for the Translation of Medical 3D Printing Applications, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China. [2]Department of Orthopedics and Traumatology, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.

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通讯作者：

通讯机构： [1]National Key Discipline of Human Anatomy, Guangdong Provincial Key Laboratory of Medical Biomechanics, Guangdong Engineering Research Center for the Translation of Medical 3D Printing Applications, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China. [2]Department of Orthopedics and Traumatology, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China. [3]Institute of Biomedical Engineering, Shenzhen Bay Laboratory, Shenzhen, Guangdong, China. [4]Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Guangdong Medical University, Zhanjiang, China.

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In silico biomechanical analysis of poller screw-assisted small-diameter intramedullary nail in the treatment of distal tibial fractures

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