Arteria ulnaris

Vectorial

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Gefäße des

Unterarms

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Querschnitt

durch den rechten Unterarm gesehen von distal

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Digitale

Subtraktionsangiographie der Hand mit Darstellung normaler Anatomie. Die A. princeps pollicis und die A. radialis indicis sind bzgl. ihres Abgangs aus dem tiefen Hohlhandbogen bzw. der A. radialis variabel.

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Arm- und

Handarterien in einer antiken anatomischen Darstellung. LATE XVII. FlCUEE I. Exhibits an unusual course of the ulnar arteryin the right arm of a young man.^ 3. 4.5,(3. 7- 8. 1. Insertion of the coraco-brachialis. 2, 2, 2. Biceps.Aponeurotic portion of this muscle.Long head of the triceps.5. Short licail of this muscle.Internal intcTmuscular ligament.Bracliialis internus.Pronator teres. 9, 9- Flexor carpi radialis. 10, 10, 10. Palmaris longus. 11, 11, 11. Flexor carpi ulnaris. 12, Flexor communis digitorum sublimis. 13, 13, 13. Flexor communis digitorum profun- dus.1 i. Flexor longus pollicis. 15, 15, 15. Supinator longus. 16, 16. Extensor carpi radialis longior.17- Extensor ossis metacarpi pollicis.IH. Extensor primi internodii. 19. 19, 19. Humeral artery. 20. Arteria profunda. 21. An unusual ulnar collateral artery. 22. Ramus anastomoticus rnagnus. 23. 23, 23. Ulnar artery arising from the hume- ral at the bend of the elbow, and running superncially on the fore-arm.Trunk of the radial and interosseal arteries.Interosseal artery.Radial ar

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The ulnar artery is a terminal branch of the brachial artery, arising at the proximal aspect of the forearm. Along with the radial artery, it is one of the main arteries of the forearm.

Summary

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

Gross anatomy

Origin

The ulnar artery arises as a large terminal branch of the brachial artery at the inferior aspect of the cubital fossa .

Course

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 .

Branches

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 .

Termination

The ulnar artery terminates at the hand via its branches; the palmar carpal arch, the superficial palmar arch, and the dorsal carpal branch .

Supply

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 .

Variant anatomy

There may be a persistent median artery from the common or anterior interosseous arteries which accompanies the median nerve through the carpal tunnel.