Unilateral Double Axillary and Double Brachial Arteries: Embryological Basis and Clinical Implications Arterias Axilar y Braquial Dobles Unilaterales: Bases Embriol車gicas e Implicaciones Cl赤nicas

作者：S Jayakumari; Gayatri Rath; Jyoti Arora

来源：International Journal of Morphology, 2006.

• Arteria axilar
• Arteria braquial
• Variacion anatomica
• Axillary artery
• Brachial artery
• Anatomical variation

This report presents double axillary and double brachial arteries on the right side of an adult male cadaver. In this case, the right axillary artery bifurcated into axillary artery I and axillary artery II posterior to the pectoralis minor muscle. Both the axillary arteries with their branches traversed upto lower border of teres major muscle and continued further as seperate entities into the cubital fossa as brachial artery I and brachial artery II respectively. The axillary artery I which continued as brachial artery I was superficial and tortuous in its course, while the axillary artery II was slender and deeply situated. The thoraco-acromial, lateral thoracic and subscapular arteries took origin from axillary artery I. The superior thoracic artery was seen arising from the thoraco-acromial artery. The anterior and posterior circumflex humeral arteries arose from axillary artery II.The profunda brachii artery was given off by the brachial artery II, while at the level of intercondylar line, the ulnar artery was given off by brachial artery I. In the cubital fossa, the brachial artery divided into radial and common interosseous artery, while the brachial artery II ended by anastomosis with brachial artery I. The ulnar, radial and common interosseous arteries continued as separate entities and exhibited a normal course and distribution in the forearm.The hypothesis for the embryological basis of persistence of double axillary and double brachical arteries may be useful for experimental embryology. The knowledge of such multiple arterial variations as in the present case is of immense significance during Doppler scanning of blood vessels for clinical diagnosis and surgical management of diseases of superior extremity Este reporte describe la presencia de las arterias axilar y braquial duplicadas en el lado derecho de un cad芍ver adulto de sexo masculino. La arteria axilar derecha se bifurc車 en arterias axilares I y II, localizadas posteriormente al m迆sculo pectoral menor. Ambas arterias, con sus respectivas ramas atravesaron bajo el m迆sculo redondo mayor y continuaron como arterias braquiales I y II, respectivamente. La arteria axilar I, que se continu車 como arteria braquial I, tuvo un trayecto superficial y tortuoso, mientras que la arteria axilar II fue de poco calibre y de localizaci車n profunda. Las arterias toracoacromial, tor芍cica lateral y subescapular se originaron de la arteria axilar I. La arteria tor芍cica superior se origin車 de la arteria toracoacromial. Las arterias circunflejas humerales anterior y posterior se originaron desde la arteria ax