In 80 adult upper limbs, the fibrous bridge of the extensor carpi radialis brevis and arcade of supinator were all found在80侧成人上肢中均可见到桡侧腕短伸肌纤维桥及旋后肌弓,有肱三头肌纤维桥的8侧(0％),肱桡肌纤维桥的 侧(.％)。