1 — Adductor pollicis; 2 — Flexor pollicis longus; Tendon; 3 — Flexor pollicis brevis; 4 — Opponens pollicis; 5 — Pronator quadratus; 6 — Flexor pollicis longus; 7 — Pronator teres; 8 — Extensor carpi radialis longus; 9 — Brachioradialis; 10 — Supinator; 11 — Brachialis; 12 — Medial epicondyle; 13 — Flexor digitorum profundus; 14 — Flexor carpi ulnaris; 15 — Pisiform; 16 — Opponens digiti minimi; 17 — Flexor digitorum profundus; Tendon; 18 — Flexor digitorum superficialis; Tendon