惯量主轴在桡骨粗隆精确定位中的应用研究  

Study on the application of inertia principal axis in the precise positioning of the radial tuberosity

作　　者：王发圣[1] 陈杰 谢昀[1] Wang Fasheng;Chen Jie;Xie Yun(Department of Orthopedic Trauma,First Clinical Medical College of Fujian Medical University,Fuzhou 350005,China)

机构地区：[1]福建医科大学附属第一医院创伤骨科,福州350005

出　　处：《中国临床解剖学杂志》2022年第2期168-172,共5页Chinese Journal of Clinical Anatomy

摘　　要：目的根据CT图像测定水平面上桡骨粗隆相对于桡骨长轴的旋转角度。方法44例桡骨标本(左侧17例,右侧27例)CT扫描图像,观察桡骨粗隆形态,选择标志点。根据CT原始图像信息应用Mimics21.0构建桡骨三维模型,分别计算生成桡骨的惯量主轴,建立惯量主轴参考坐标系。统计每例标本桡骨粗隆后侧嵴标志点在水平面上相对桡骨长轴的旋转角度。结果桡骨粗隆后侧嵴普遍存在。桡骨的惯量主轴与桡骨的相对位置是稳定的。桡骨粗隆后侧嵴在该水平面坐标参考系上相对桡骨主旋转轴的角度为(82.93±5.55)°。结论基于惯量主轴建立的解剖参考坐标系稳定性好,可精确定位桡骨粗隆。Objective To determine the rotation angle of the radial tuberosity relative to the major axis of the radius at the horizontal plane according to theits computed tomography(CT)image.Methods CT images of 44 independent radial specimens(17 on the left and 27 on the right)were scanned to observe the morphology of the radial tuberosity and select the marker points from it.The Mimics21.0 was used to construct the radial three-dimensional(3D)model based on the original CT image information.Then the inertia principal axis of radial was calculated and generated,and the reference coordinate frame of inertia principal axis was established.The rotation angles of the posterior ridge marks on the radial tuberosity on the horizontal plane relative to the major axis in each specimen were calculated and recorded.Results The posterior ridge of radial tuberosity was ubiquitous.The relative position between inertia principal axis and radius was stable.The rotation angle of the posterior ridge of the radial tuberosity relative to the major axis of the radius in the horizontal coordinate frame was(82.93±5.55)°.Conclusions The anatomical reference coordinate frame based on the principal axis of inertia is stable and can be used to precisely locate the radial tuberosity.

关 键 词：桡骨粗隆 惯量主轴 解剖参考坐标系 

分 类 号：R322[医药卫生—人体解剖和组织胚胎学]