Volar aspect of right hand

Carpal canal opened; fascia intact

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Image #102-7

Volar aspect of right hand

Carpal canal opened; fascia intact

The volar and transverse carpal ligaments, which together comprise the flexor retinaculum, have been resected to expose the contents of the carpal canal.

1. Abductor pollicis brevis muscle
2. Flexor pollicis brevis muscle (superficial head)
3. Flexor pollicis brevis muscle (deep head)
4. Opponens pollicis muscle
5. Metacarpotrapezial joint capsule
6. Abductor pollicis longus muscle (tendon of insertion)
7. Extensor pollicis brevis muscle (tendon of insertion)
8. Superficial anterior branch radial artery
9. Palmar cutaneous branch of median nerve
10. Flexor carpi radialis muscle (tendon of insertion)
11. Radial artery
12. Median artery (large)
13. Flexor digitorum superficialis muscle
14. Fascia within carpal tunnel (including sheath of common tendon of flexor muscles)
15. Flexor carpi ulnaris muscle (tendon of insertion)
16. Ulnar artery
17. Transverse carpal ligament (divided)
18. Median nerve
19. Muscular branch of median nerve (recurrent branch)
20. Opponens digiti minimi muscle