- origin: terminal branch of the brachial artery
- location: inferior aspect of the cubital fossa
- supply: elbow joint, medial and central forearm muscles, median and ulnar nerves, and common flexor sheath
- main branches: anterior and posterior ulnar recurrent arteries, common interosseous artery, palmar carpal arch, superficial palmar arch, and dorsal carpal branch
The ulnar artery courses along the ulnar aspect of the forearm deep to the flexor muscles. It then enters the hand after passing through the Guyon canal (ulnar canal) located between the pisiform and the hook of hamate. It then divides into its terminal branches at the carpal region of the hand .
The main branches of the ulnar artery include the anterior and posterior ulnar recurrent arteries, the common interosseous, the palmar carpal arch, the superficial palmar arch, and the dorsal carpal branch .
The ulnar artery terminates at the hand via its branches; the palmar carpal arch, the superficial palmar arch, and the dorsal carpal branch .
The ulnar artery supplies the periarticular anastomoses of the elbow via the anterior and posterior ulnar recurrent arteries. It also supplies the medial and central forearm muscles, the median and ulnar nerves, and the common flexor sheath .
There may be a persistent median artery from the common or anterior interosseous arteries which accompanies the median nerve through the carpal tunnel.