WINDSOR UNIVERSITY SCHOOL OF MEDICINE St.Kitts DEPARTMENT OF ANATOMY UPPER LIMB Cubital fossa Dr. SREEKANTH THOTA

CUBITAL FOSSA The cubital fossa is an important area of transition between the arm and the forearm. It is located anterior to the elbow joint and is a triangular depression formed between two forearm muscles: 1. Brachioradialis 2. Pronator teres

BOUNDRIES Laterall(2) Brachioradialis muscle -Medially(3) Pronator teres muscle -Base(1) Triangle is formed by an imaginary line drawn b/w the 2 epicondyle -Floor: Supinator m laterally Brachialis m medially -Roof: Skin, fascia,& reinforced by the bicipital aponeurosis

Roof On the roof lie three named veins (cephalic, basilic and median cubital) and two cutaneous nerves (the lateral cutaneous of the forearm and the medial cutaneous of the forearm.

Roof of the fossa : Containing the Median cubital vein. This is a communication between Cephalic And Basillic veins Median Cubital Vein

CONTENTS: From medial to lateral side 1-Median Nerve 2-Bifurcation of brachial artery into radial and ulnar artery 3-Tendon of biceps muscle 4-Radial nerve and its deep branch

A N T RN [superficial br.]

Bicipital aponeurosis The median cubital vein lies directly on the deep fascia, crossing the bicipital aponeurosis, which separates it from the underlying brachial artery and median nerve and provides some protection to the latter.

Blood pressure and brachial artery

Ulnar nerve injury The ulnar nerve does not pass through the cubital fossa. Instead, it passes posterior to the medial epicondyle. Posterior to the medial epicondyle of the humerus the ulnar nerve is bound in a fibro-osseous tunnel (the cubital tunnel) by a retinaculum.. Older patients may develop degenerative changes within this tunnel, which compresses the ulnar nerve when flexed.

Cubital tunnel syndrome The symptoms are very similar to the pain from hitting your funny bone.