基于CT图像重建人体膝关节3D骨骼优化模型

Reconstruction of three-dimensional skeleton optimization model of human knee joint based on CT images

目的:重建一个含有股骨远端和胫骨近端的人体膝关节3D骨骼优化模型。方法:采用螺旋CT机扫描人体膝关节部位,从胫骨近端到股骨远端,获得DICOM格式图像数据。利用Mimics软件进行图像数据输入和视图图像处理重建3D骨骼模型,并使用它自带的3-matic软件对所建的3D模型进行优化处理。结果:使用Mimics软件重建了一个含有股骨远端和胫骨近端的左侧人体膝关节3D骨骼模型,其自带的3-matic软件重建了一个含有股骨远端和胫骨近端的左侧人体膝关节3D骨骼优化模型。结论:该优化模型可清晰精确地模拟股骨远端和胫骨近端的三维几何形态,能导入到ANSYS/ABAQUS等有限元软件进行力学特性分析,也能结合MRI重建含有半月板的人体膝关节生物力学模型,为仿生膝关节的结构设计提供理论依据。

Objective To reconstruct a three-dimensional（3D） skeleton optimization model of human knee joint containing distal femur and proximal tibia. Methods Spiral CT machine was used to scan human knee joint from proximal tibia to distal femur to obtain images data in DICOM format. The images data were imported and view images were processed by using Mimics software to reconstruct 3D skeleton model. And the reconstructed 3D model was optimized by 3- matic software of Mimics software. Results A 3D skeleton model of left human knee joint containing distal femur and proximal tibia was reconstructed by using Mimics software, and a 3D skeleton optimization model of left human knee joint containing distal femur and proximal tibia was reconstructed by using 3- matic software of Mimics software. Conclusion The optimization model clearly and precisely simulates the 3D geometrical morphology of distal femur and proximal tibia.The simulated 3D geometrical morphology can be imported into ANSYS/ABAQUS finite element software to analyze mechanical properties, and be combined with MRI to reconstruct the biomechanical model of human knee joint containing meniscus, providing theoretical basis for the structural design of bionic knee joint.