1 — Ulnar nerve, dorsal branch; 2 — Basilic vein; 3 — Medial cutaneous nerve of forearm; Medial antebrachial cutaneous nerve, posterior branch; 4 — Olecranon; 5 — Radial nerve; Posterior cutaneous nerve of forearm; Posterior antebrachial cutaneous nerve; 6 — Medial cutaneous nerve of arm; Medial brachial cutaneous nerve; 7 — Radial nerve; Posterior cutaneous nerve of arm; Posterior brachial cutaneous nerve;
8 — Cephalic vein; 9 — Radial nerve, superficial branch