1 — Basilic vein; 2 — Median antebrachial vein; Median vein of forearm; 3 — Radial nerve; Posterior cutaneous nerve of forearm; Posterior antebrachial cutaneous nerve; 4 — Median cubital vein; 5 — Musculocutaneous nerve; Lateral cutaneous nerve of forearm; Lateral antebrachial cutaneous nerve; 6 — Cephalic vein; 7 — Lateral supraclavicular nerves; 8 — Intercostobrachial nerve; 9 — Medial cutaneous nerve of arm; Medial brachial cutaneous nerve; 10 — Medial cutaneous nerve of forearm; Medial antebrachial cutaneous nerve; 11 — Medial cutaneous nerve of forearm; Medial antebrachial cutaneous nerve, anterior branch; 12 — Medial cutaneous nerve of forearm; Medial antebrachial cutaneous nerve, posterior branch; 13 — Lateral epicondyle; 14 — Olecranon; 15 — Inferior lateral cutaneous nerve of arm; Inferior lateral brachial cutaneous nerve; 16 — Posterior cutaneous nerve of arm; Posterior brachial cutaneous nerve; 17 = 15 + 16 — Radial nerve;18 — Axillary nerve; Superior lateral cutaneous nerve of arm; Superior lateral brachial cutaneous nerve; 19 — Posterior circumflex humeral artery, cutaneous branch; 20 — Posterior circumflex humeral vein, cutaneous branch; 21 — Acromial anastomosis