1 — Base of metacarpal [III]; 2 — Interosseous membrane of forearm; 3 — Ulna; 4 — Olecranon; 5 — Medial epicondyle; 6 — Humerus; 7 — Brachioradialis; 8 — Extensor carpi radialis longus; 9 — Extensor carpi radialis brevis; 10 — Radius; 11 — Brachioradialis; Tendon; 12 — Radial styloid process; 13 — Base of metacarpal [II]; 14 — Shaft of metacarpal; Body of metacarpal [II]; 15 — Head of metacarpal [II]
