Ulnar collateral artery

Ulnar Collateral Artery

Ulnar collateral artery (labeled as ulnar recurrent) and its branches.

The Ulnar Collateral Artery is a branch of the brachial artery in the upper limb. It is responsible for supplying blood to the medial aspect of the forearm and the hand.

Anatomy

The ulnar collateral artery originates from the brachial artery in the cubital fossa. It then divides into two branches: the anterior and posterior ulnar recurrent arteries. These arteries anastomose with the ulnar artery to provide collateral circulation to the forearm and hand.

Anterior Ulnar Recurrent Artery

The anterior ulnar recurrent artery arises from the ulnar collateral artery and ascends anteriorly in the forearm. It anastomoses with the ulnar artery in the region of the elbow.

Posterior Ulnar Recurrent Artery

The posterior ulnar recurrent artery also arises from the ulnar collateral artery but ascends posteriorly in the forearm. It anastomoses with the ulnar artery near the elbow.

Clinical Significance

The ulnar collateral artery is an important vessel in the upper limb. It provides collateral circulation, which is crucial in situations where the main arterial supply (via the ulnar artery) is compromised. Knowledge of its anatomy is important in surgical procedures involving the upper limb.

See Also

• Brachial artery
• Ulnar artery
• Upper limb