MIPPO技术下胫骨近端外侧LCP锁定固定有限元模型设计

Designing Finite Element Model of Lateral LCP Locking Internal Fixation for Proximal Tibia Fracture with MIPPO Technology

目的:设计胫骨近端外侧LCP锁定固定有限元模型,可以进一步用于生物力学研究及快速成形模型构建。方法:采集正常胫骨CT扫描DICOM数据,应用Catia软件建立胫骨上端几何模型,用Solidworks软件切割出模拟骨折线,再用特征建模的方法加入内固定模型,最后对模型进行力学有限元分析。结果:胫骨近端外侧LCP内固定有限元模型的设计可以根据模型不同部分赋值,模拟不同工况条件下内固定物的生物力学特点,具有先进性、科学性,直观性、且结果精确。结论:胫骨近端骨折外侧LCP内固定有限元模型可以摸拟不同条件对内固定物的生物力学影响,有限元法是研究骨科生物力学的有效方法,实验结果可以指导临床正确选用内固定物及内固定方式。

Objective： To provide an effective method through designing finite element model of lateral LCP locking Internal fixation, in the study of Biomechanical Research and Rapid Prototyping Model. Methods： Collect DICOM data excluding any lesions by taking Tibia-fibula x-ray films, generate the geometric model with Carla software, cut out the simulated fracture line using SOLIDWORKS software, establish the fixation model via feature-based modeling method, and perform finite element analysis on the model. Results： The design of finite element model of lateral LCP locking Internal fixation with different material properties and biomechanical characteristics has advanced, scientific, intuitive, and the results are accurate. Conclusion： The model can simulates the biomechanical effects of different conditions and internal fixation. The finite element method is an effective method of orthopedic biomechanics. The experimental results can guide correct selection of plate materials and internal fixation.