The cubital fossa is located on the anterior surface of the elbow. It is bordered laterally by the brachioradialis muscle, medially by the pronator teres muscle, and its floor is formed mainly by the brachialis muscle. The brachial artery, median nerve, and biceps brachii tendon pass through the cubital fossa from lateral to medial. The radial nerve divides into superficial and deep branches as it passes through the cubital fossa, while the ulnar nerve passes behind the medial epicondyle. Structures passing through or adjacent to the cubital fossa include the median cubital vein and cutaneous nerves of the forearm.

1. by Yapa Wijeratne
Faculty of Medicine
University of Peradeniya
Sri Lanka

2. • Lateral: brachioradialis
• Medial: pronator teres
• Base: an imaginary horizontal line between the medial
and lateral epicondyles.
• Bed/ floor: (mainly) by the brachialis muscle.
• & below by the supinator.
• Roof: deep fascia of the forearm,
• reinforced on the medial side by the bicipital aponeurosis.

4.  from lateral to medial, are:
• Tendon of the biceps brachii muscle;
• Brachial artery;
• Median nerve
 TAN-tendon artery nerve

5. • Lies just under the lip of the brachioradialis muscle.
• In this position, the radial nerve divides into superficial
and deep branches:
1. The superficial branch continues into the forearm
just deep to the brachioradialis muscle;
2. The deep branch passes between the two heads
of the supinator muscle to access the posterior
compartment of the forearm.
• The ulnar nerve DOES NOT PASS THROUGH the
cubital fossa. Instead, it passes posterior to the
medial epicondyle.

8.  1.Median cubital vein,
 which passes diagonally across the roof and
connects the cephalic vein on the lateral side of
the upper limb with the basilic vein on the medial
side.
 The bicipital aponeurosis separates the median
cubital vein from the brachial artery and median
nerve.
 2.Cutaneous nerves-
• Medial cutaneous nerve of the forearm
• Lateral cutaneous nerve of the forearm