结论肘关节后外侧旋转不稳定除桡侧副韧带的损伤外，可能还有外侧伸肌及伸肌腱膜的损伤。
Conclusions Besides the injury of the radial collateral ligament, the injuries of the external musculus extensor and the aponeurosis can cause the posterolateral rotatory instability of the elbow.
扁平足：先天性或后天性足纵弓平坦的一种外科病。足和足跟向外侧旋转，足弓消失，形成八字脚。
Flatfoot: Congenital or acquired flatness of the arch of the foot, in which the foot and heel usually also roll outward, resulting in a splayfooted position.
行星齿轮的旋转使得外侧半轴齿轮加速。
The rotation of the differential pinions makes the outside gear speed up.
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