Cubital fossa

The Cubital Fossa
The cubital fossa is a triangular depression that lies in front
of the elbow (Figs. 9.47 and 9.48).
Boundaries
■■ Laterally: The brachioradialis muscle
■■ Medially: The pronator teres muscle
The base of the triangle is formed by an imaginary line
drawn between the two epicondyles of the humerus.
The floor of the fossa is formed by the supinator muscle
laterally
and the brachialis muscle medially. The roof is
formed by skin and fascia and is reinforced by the bicipital
aponeurosis.
Contents
The cubital fossa (Fig. 9.47) contains the following structures,
enumerated from the medial to the lateral side: the
median nerve, the bifurcation of the brachial artery into the
ulnar and radial arteries, the tendon of the biceps muscle,
and the radial nerve and its deep branch.
The supratrochlear lymph node lies in the superficial
fascia over the upper part of the fossa, above the trochlea
(Fig. 9.40). It receives afferent lymph vessels from the third,
fourth, and fifth fingers; the medial part of the hand; and
the medial side of the forearm. The efferent lymph vessels
pass up to the axilla and enter the lateral axillary group of