The lateral antebrachial cutaneous nerve is the only branch of the musculocutaneous nerve that supply cutaneous innervation. It innervates the skin covering of the radial side of the antebrachium
Innervation of the lateral antebrachium by the lateral antebrachial cutaneous nerve (yellow). Radial nerve (purple), medial antebrachial cutaneous nerve (green), axillary nerve (blue at shoulder), ulnar nerve (blue at hand), median nerve (orange at hand), medial brachial cutaneous nerve (orange at arm). P = posterior. A = anterior
