Department of Anatomical Sciences, School of Medicine, St George's University, Grenada, West Indies.
Singapore Med J. 2009 Nov;50(11):e391-2.
We present a 48-year-old male cadaver in which the right superficial palmar arterial arch had no contribution from the radial artery and terminated by giving rise to a common trunk for the princeps pollicis and radialis indicis arteries. The dorsal radial artery of the thumb was absent and no arterial supply was provided by the radial artery. Accordingly, the entire arterial supply to the right thumb was provided by the superficial palmar arterial arch, which was composed solely of the ulnar artery, which received no collateral supply from the radial artery system. Considering that the arterial supply of the thumb in the present case was solely provided by the superficial palmar arch, a potential hazard could exist in the event of traumatic injury to the ulnar artery.
我们呈现了一具 48 岁男性尸体，其右侧掌浅弓没有来自桡动脉的分支，而是直接发出一个共同干，为拇指球和示指指动脉提供分支。拇指背侧桡动脉缺失，桡动脉也没有为拇指提供动脉供血。因此，右手拇指的全部动脉供血均由掌浅弓提供，该弓完全由尺动脉组成，没有桡动脉系统的侧支供血。鉴于本例拇指的动脉供血完全由掌浅弓提供，如果尺动脉受到创伤性损伤，可能存在潜在的危险。
