此类关节有三个自由度即在三个互相垂直的运动轴上可做屈伸 收展 旋转等多方向的运动。
MPR和3D有助于弥补轴位CT的不足，较全面评价关节内外的损伤改变，显示多发粉碎性骨折的三维空间关系。
The MPR and3D, as supplyments of the transaxial CT, were helpful to assess the inner or outer traumatic change of joint and to display the3D spatial relationship of multiple fragmented trauma.
由于骸关节的特殊生理结构决定其可以绕支撑腿一侧支点做三轴运动。
Because of the special structure of hip point, the hip can make 3-axis movement around supporting leg.
运用医学影像软体进行测量，以三维的观念测量各个参考点，并找出参考轴之间的关系与各参考点到关节面的距离，以建立国人膝关节参考点资料库。
We input the MRI data to the medical image software and use 3d concept to measure several bony landmarks to find the relationship of those bony landmarks.
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