王星亮;刘云鹏;徐志庆;姚杰;杨滨;

• 1:安徽医科大学无锡临床学院(解放军第101医院骨科)
• 2:北京航空航天大学生物医学工程学院
• 3:北京大学国际医院骨科

摘要(Abstract)：

[目的]利用多角度静态核磁共振扫描图像重建在体髌股关节准动态三维运动模型,并以此动态模型计算屈伸膝过程中的髌骨运动轨迹、髌股关节旋转轴。[方法]选择1名健康成年男性,对其右膝关节分别在0°、30°、60°、90°、120°5个屈膝角度进行核磁共振扫描,将扫描结果以Dicom格式导入Mimics软件中,提取髌骨、股骨轮廓,重建五个屈膝角度的静态髌股关节三维模型,再将五个静态模型导入逆向工程软件Rapidform中进行同一坐标系的配准,利用三次样条插值算法,将离散静态模型配准为动态三维运动模型;并据此动态三维模型计算髌骨运动轨迹和髌股关节旋转轴。[结果]基于静态核磁共振图像可以快速构建准确而无辐射的髌股关节准动态三维运动模型,以此动态模型计算出的髌骨运动轨迹和髌股关节旋转轴与既往文献结果相一致。[结论]在屈膝过程中,髌骨随着屈膝角度的增加相对于股骨滑车不断俯屈,同时轻度的外倾和外旋,而髌股关节旋转轴波动在股骨通髁线附近。

关键词(KeyWords)： 生物力学;髌股关节;三维重建;磁共振

Abstract:

Keywords:

基金项目(Foundation): 2014南京军区重点科研项目(编号:14ZD04)

作者(Author): 王星亮;刘云鹏;徐志庆;姚杰;杨滨;

Email:

DOI:

参考文献(References)：

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