摘要
背景:现有解剖型接骨板在个性化方面存在缺点及不足。目的:用CT原始数据建立股骨远端骨折模拟复位后的三维实体模型,并设计个性化解剖型接骨板的三维实体模型。方法:选取1例左股骨远端骨折患者的CT扫描原始数据。导入Mimics软件,得到股骨远端骨折模拟复位的三维实体模型;用Geomagic软件转换为符合要求的NURBS封闭曲面模型;接着用UG软件设计出接骨板的内外表面,得到模型数据,确定螺钉孔的位置并设计螺钉孔,并对设计好的接骨板进行数控编程。将生成的NC代码输入数控机床,加工出股骨远端个性化解剖型接骨板。结果与结论:①建立了股骨远端复杂骨折模拟复位后的三维实体模型。②建立了股骨远端个性化解剖型接骨板的三维实体模型及股骨远端个性化解剖型接骨板螺钉系统装配的三维实体模型。③加工出了股骨远端个性化解剖型接骨板模型及股骨远端骨骼模型。模型外形逼真,接近真实情况,具有良好的骨面贴合性和特殊的螺钉孔设计。
BACKGROUND： The existing anatomic plates are lack of personalization. OBJECTIVE： To establish a three-dimensional solid model of distal femoral fracture based on CT scanning data and to design a solid model of personalized anatomic plate. METHODS： One case of male patient with distal femoral fracture was used in the experiment, and the raw data of selected regions was obtained through the thin slices CT scan. The data was saved in Dicom format and exported into the Mimics software and then a solid model of distal femoral fractures was obtained. The model was saved in IGES format, and imported into Geomagic software, transformed IGES point cloud data into polygon model and mesh model of the structure, finally the closed NURBS surface model was obtained. The femur surface model was filed into UG software in IGES format, selected the best surface fitting with the plate according to surgical experience and demand on the femur surface plate. RESULTS AND CONCLUSION：①A three-dimensional solid model of complex distal femoral fracture was established.①A three-dimensional solid model of personalized anatomic plate which has a good facial fit and a special design of screw holes was established.③The distal femoral personalized anatomic plate model and distal femur model were machined. The profile of model was realistic and closed to the normal, which has best surface fitting and special design of screw holes.
出处
《中国组织工程研究与临床康复》
CAS
CSCD
北大核心
2011年第13期2309-2312,共4页
Journal of Clinical Rehabilitative Tissue Engineering Research
