Unilateral duplication of palmar arterial arches--a case report.

Recent progress in hand surgery has engendered a need for precise knowledge of anatomical variations of blood supply of hand. The present paper describes an unusual organization of palmar arterial arches and attempts to discuss its clinical implications. Double superficial palmar arch of the mediano-ulnar variant was observed with a double deep palmar arch of equal caliber, formed by splitting of deep branches of radial artery and ulnar artery. The superficial palmar branch of radial artery was absent.