What Is the Cubital Fossa?

It is located in front of the elbow joint. It is a triangular recess, the lateral boundary is the radial brachialis muscle. The medial is the pronator circular muscle, the upper boundary is the line between the humerus and the lateral epicondyle. Tendons, brachial artery and its branches, median nerve.

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It is a slightly triangular depression in the front of the elbow, with the tip pointing distally and the bottom nearing.

The upper border is the line connecting the inner and outer epicondyles of the humerus, the lower lateral border is the humerus radialus, the lower medial border is the pronator muscle, and the top is from skin to superficial fascia, deep fascia, and biceps tendon. The bottom of the membrane is the brachialis muscle, the supinator muscle, and the elbow joint capsule.

The biceps brachialis tendon is located on the radial side, and the ulnar side is the brachial artery and two accompanying veins, and the radial and ulnar vessels, and the medial nerve is the most ulnar side. Deep elbow lymph nodes are located at the bifurcation of the brachial artery. The brachial artery is divided into radial and ulnar arteries at about the radial neck plane. The radial artery crosses the surface of the biceps tendon obliquely outward to the medial side of the forearm radial brachialis; the ulnar artery passes through the pronation circular muscle ulnar deep to the forearm ulnar carpi flexor. The median nerve passes over the front of the ulnar vessel and penetrates between the two sides of the anterior circular muscle and enters the deep side of the superficial flexor muscle. The radial nerve is located on the deep side of the brachialis muscle outside the elbow fossa, to the outside of the radial artery of the forearm; the deep branch perforator muscle to the posterior region of the forearm is renamed the posterior interosseous nerve. The lateral forearm cutaneous nerve penetrates the deep fascia outside the biceps tendon.