桡动脉在手部的正常行程为 ,在桡骨下端斜过拇长展肌和拇短伸肌腱深面转至腕骨背侧 ,沿舟骨和大多角骨背面下行 ,斜过拇长伸肌腱深面至手背 ,穿第一掌骨间隙入手掌深部 ,与尺动脉掌深支吻合构成掌深弓 ;桡动脉在转向手背时发出 1支较细的掌浅支 ,穿拇短屈肌深方或浅面与尺动脉 Radial artery in the normal course of the hand, at the lower end of the radial oblique aponeurosis long extensor and thumb extensor tendon deep to the carpal dorsal, along the scaphoid and the back of the great polygon down, oblique long extensor tendon To the back of the hand, the first metacarpal clearance into the palm of the hand deep, and the ulnar artery and foot palm deep anastomosis constitute the palm of the deep bow; radial artery in the steering back issued a thin palm superficial branch, With ulnar artery