What is the clinical significance of a superficial ulnar artery?
At the palm, it formed the superficial and deep palmar arches together with the branches of the radial artery. The presence of a superficial ulnar artery is clinically important when raising forearm flaps in reconstructive surgery.
Is the ulnar artery important?
Although the muscles of the forearm and hand may have vascular contributions from more than one source, the ulnar artery plays a significant role in the blood supply to the following muscles: flexor carpi ulnaris, palmaris longus, flexor carpi radialis, flexor digitorum superficialis, flexor digitorum profundus, and …
Is the ulnar artery superficial?
A superficial ulnar artery, that originates from the brachial artery in the arm, typically lays superficial (5) or deep (6,7) to the ante brachial fascia in the forearm. In the present case, no such finding was observed, since the ulnar artery branched out normally from the brachial artery in the cubital fossa.
What happens if the ulnar artery is blocked?
Patients with ulnar artery thrombosis at the wrist may present with pain at night or with repetitive activity and cold intolerance. Exquisite tenderness is present at the site of pathology. Eventually, patients may have dependent rubor or ulceration of the ring finger and the tips of the little fingers.
What happens in the cubital fossa?
The cubital fossa contains four structures which from medial to lateral are : The median nerve- The median nerve leaves the cubital between the two heads of the pronator teres. It supplies the majority of the flexor muscles in the forearm.
How does the ulnar artery enter the hand?
It enters the hand with the ulnar nerve and vein by 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 1,3.
Where does ulnar start?
cubital fossa
Origin. The ulnar artery arises as a large terminal branch of the brachial artery at the inferior aspect of the cubital fossa 1.
Is ulnar artery visible?
The ulnar artery is the main blood vessel, with oxygenated blood, of the medial aspects of the forearm. It arises from the brachial artery and terminates in the superficial palmar arch, which joins with the superficial branch of the radial artery. It is palpable on the anterior and medial aspect of the wrist.
What are the superficial veins of the upper limb?
There are two prominent superficial veins of the upper limb; they are the cephalic and basilic veins, and these two extensive veins originate from the venous networks of the dorsum of the hand. The hand is drained by superficial and deep veins.
How common are radial and ulnar artery variants?
Among these, variants of the ulnar and radial arteries are the most common [ 1, 3, 4 ]. Particularly, the presence of superficial radial or ulnar arteries is of utmost clinical significance, as these arteries are most susceptible to trauma, and can be easily confused with superficial veins [ 1, 2 ].
What does the ulnar artery give off?
Usually, the ulnar artery gives off the common interosseous artery that divides into the anterior and posterior interosseous arteries [ 3 ]. It has been increasingly recognized that variations in the major arteries of the upper limb are common, being found in up to one fifth of individuals [ 1, 4, 5 ].
What is the subua artery?
One variant of superficial ulnar arteries is the superficial brachioulnar artery (SuBUA), which is defined as an ulnar artery with a high origin in the arm that progresses over the superficial muscles of the forearm. The prevalence of the SuBUA varies widely in different studies [ 3 ].
What is the path of the superficial brachioulnar artery?
The superficial brachioulnar artery originated at midarm level from the brachial artery, pierced the brachial fascia immediately proximal to the elbow, crossed superficial to the muscles that originated from the medial epicondyle, and ran over the pronator teres muscle in a doubling of the antebrachial fascia.