Absence of right radial artery. Radial artery, was not present and the anterior interosseous artery was unusually large in size. The anterior interosseous artery which coursed vertically between radius and ulna in the distal forearm branches off into two small lateral arteries to supply blood to the hands. One of the branches curled round the carpus and anastomosed with the branches of the ulnar artery, whereas the other branch traversed to radialis and became large-caliber vessel. Distal ulnar artery was small in size and together with the interosseous artery supplied blood to the hands.