Anatomy of Cubital fossa.

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