Al Talalwah Waseem Bader, Getachew Dereje Regassa
Department of Basic Medical Sciences Hospital King, Abdullah International Medical Research Center/King Saud bin Abdulaziz University for Health Sciences, College of Medicine, - NGHA Riyadh, P.O. Box 3660, 11481 Riyadh.
Department of Anatomy, Hawassa University College of Medicine and Health Sciences, School of Medicine, post code 1560, Awassa, Ethiopia.
Malays J Med Sci. 2015 May-Jun;22(3):41-7.
The ulnar artery is a terminal branch of the brachial artery. The aim of this study is to provide comprehensive data concerning the morphology of the ulnar artery, with clinical implications for surgeons.
The current study includes the dissection of 68 upper limb specimens. It investigates the characteristics of the ulnar artery such as the internal diameter, external diameter, wall thickness, and distance of the ulnar artery origin.
In this study, the ulnar artery arose distal to the superior margin of the head of the radius in 82.65% of cases. The angle degree of the ulnar artery with respect to the brachial artery ranges from to 8° to 30°. The internal and external diameters of the ulnar artery were found to decrease gradually from proximal to distal in both genders. The external and internal diameters of the ulnar artery are greater in males than in females. In all cases, the external and internal diameters and the thickness of the ulnar artery at three levels were found to be greater in the right ulnar artery than the left.
The right ulnar artery may be the appropriate choice for artificial arterial-venous fistula for haemodialysis. Due to its wide diameter, the proximal part of the radial artery is a suitable site for the artificial arterial-venous fistula immediately below the origin prior to its profound course. Therefore, it is an easy access for artificial arterial-venous fistula for surgeons. The radiologists must alert the surgeons for surgical modification in the case of high brachial bifurcation.
尺动脉是肱动脉的终末分支。本研究的目的是提供有关尺动脉形态的全面数据，为外科医生提供临床参考。
本研究包括对68例上肢标本的解剖。研究了尺动脉的内径、外径、壁厚以及尺动脉起点的距离等特征。
在本研究中，82.65%的病例中尺动脉起自桡骨头上方边缘的远侧。尺动脉相对于肱动脉的角度范围为8°至30°。发现尺动脉的内径和外径在两性中均从近端到远端逐渐减小。尺动脉的外径和内径男性大于女性。在所有病例中，发现右侧尺动脉在三个水平的外径、内径和壁厚均大于左侧。
右侧尺动脉可能是血液透析人工动静脉内瘘的合适选择。由于其直径较宽，桡动脉近端是在其深入走行之前紧起源下方进行人工动静脉内瘘的合适部位。因此，对外科医生来说是建立人工动静脉内瘘的便捷途径。在肱动脉高位分叉的情况下，放射科医生必须提醒外科医生进行手术调整。
