精细化股骨粗隆间骨折PFNA内固定术三维有限元模型的构建

Construction of a refined three-dimensional finite element model for PFNA internal fixation of intertrochanteric fracture of femur

摘要:

目的 建立精细化股骨粗隆间骨折股骨近端防旋髓内钉（PFNA）内固定术的三维有限元模型，为股骨粗隆间骨折的力学研究提供研究基础。方法 基于研究对象的CT数据，应用数字化三维重建、CAD、逆向工程、有限元生物力学分析等技术，建立股骨粗隆间骨折股骨近端防旋髓内钉（PFNA）内固定术的三维有限元模型，并验证模型的有效性。结果 建立了正常人的股骨粗隆间骨折PFNA内固定术三维有限元模型，经检验本研究所建立的模型具有应用价值，可用于股骨的力学研究。结论 本研究建立的粗隆间骨折PFNA内固定术的三维有限元模型，充分考虑了软骨，韧带，肌肉，应力接触点等对股骨的力学影响，模型更加接近人体实际，其力学研究结果更具有参考意义。

Abstract:

Objective The three-dimensional finite element model of PFNA internal fixation of intertrochanteric fracture of femur was established to provide a research basis for the mechanical study of intertrochanteric fracture of femur.Methods Based on the CT data of the study object, the three-dimensional finite element model of PFNA internal fixation of intertrochanteric fracture of femur was established by applying digital three-dimensional reconstruction, CAD, reverse engineering, finite element biomechanical analysis and other technologies, and the effectiveness of the model was verified.Results A three-dimensional finite element model for PFNA internal fixation of intertrochanteric fracture of femur in normal people was established. The model established in this study has practical value and can be used for the mechanical study of femur.Conclusion The three-dimensional finite element model of PFNA internal fixation for intertrochanteric fracture established in this study fully considers the mechanical effects of cartilage, ligament, muscle, stress contact point, etc., on femur. The model is closer to the actual human body, and the mechanical research results are more significant for reference.