Proximal origins of radial and common interosseous arteries.

The radial artery, which arises normally from the brachial artery at the level of the neck of the radius, was derived directly from the axillary artery about 25 cm proximal to the humeral intercondylar line. We had also observed a high origin of the common interosseous artery in the same extremity. The common interosseous artery, a short branch of the ulnar which normally arises in the distal part of the cubital fossa, originated at the level of the humeral intercondylar line from the brachial artery in our cadaver.