VARIATIONS OF THE MAIN ARTERIAL CHANNELS IN BRACHIUM AND ANTEBRACHIUM / 解剖学报

ABSTRACT

Among a total of 276 upper extremities dissected it was found that 38 (13.7%) of the cases showed variations in the origin and course of the main arterial channels in brachium and antebrachium. In the 138 cadavers the arterial variations appeared bilaterally in 5 bodies (3.62%) and unilaterally in the other 28 bodies (20.29%). The anomalous arteries occurred more often on the right (22, 7.96%) than on the left (16, 5.80%). The patterns of variation encountered were grouped as follows 1. Anomalous radial artery (1) High originated radial artery in 17 (6.16%) extremities (right 11, left 6). (2) Unusual duplication of the termination of the radial artery in 3 (1.13%)extremities (right 2, left 1). 2. Superficial ulnar artery According to the site of origin above or below the intercondylar line the arteries were divided into two groups (1) Highly originated superficial ulnar artery in 7 (2.53%)—right 4, left 3. (2) Lowly originated superficial ulnar artery in 5 (1.81%)—right 3, left 2. 3. Superficial median artery and large calibered median artery were found in 6 extremities. The bifurcation of brachial artery into radial and ulnar arteries in 140 sides of male adults was mostly (82.14%) below the intercondylar line with a range from 2.6 cm. to 4.0 cm. The surgical significance of several of the striking variations was discussed.