The infraclavicular brachial plexus block provides cutaneous anaesthesia of the entire upper limb
The radial nerve innervates the skin of the back of the brachium and the lateral hand
The musculocutaneous nerve innervates the skin of the lateral antebrachium
The ulnar nerve innervates the skin of the medial hand and fingers
The median nerve innervates the skin of the anterior part of the lateral hand and fingers and the distal dorsal part of the second and third finger
The skin of the medial arm and forearm is innervated by the medial cutaneous nerves of the arm and forearm. They are both derived from the medial cord of the brachial plexus and covered by the infraclavicular brachial plexus block
Blue (shoulder): axillary nerve; purple: radial nerve; orange (arm): medial cutaneous nerve of the arm; yellow: musculocutaneous nerve; green: medial cutaneous nerve of the forearm; blue (hand): ulnar nerve; orange (hand): median nerve
