TY - JOUR A1 - , T1 - Study of two cases of high-origin radial artery in humans JO - Eur. J. Anat. SN - 1136-4890 Y1 - 2009 VL - 13 SP - 97 EP - 103 UR - http://www.eurjanat.com/web/paper.php?id=09020097 KW - anatomical variation KW - article KW - case report KW - human KW - radial artery N2 - Variations in the normal arterial anatomical pattern are very common and among them the high origin of the radial artery is the most frequent variation. We report two cases of a unilateral high-origin radial artery with different variations in each case in the course of the artery, along with a review of the literature. From an embryological point of view, the presence of a radial artery of high origin is established by developmental stage 18 and may be due to a differentiated hemodynamic predominance of the deep arterial segments over the superficial arterial network, chemical factors, foetal position in the uterus, developmental arrest in early stages, and genetic predisposition. Additionally, a high-origin radial artery may complicate medical procedures, leading to misdiagnosis and easier injury. Finally, we discuss the terminology problem we came across reviewing the literature because a number of studies refer to this variant using different terms. ER -