carpal tunnel + anatomical snuffbox

Question 1

What are the borders of the carpal tunnel?

Answer 1

Flexor retinaculum (attached to pisiform and hook of hamate, scaphoid tubercle and trapezium) and the carpal bones.

Question 2

Which tendons pass through the carpal tunnel?

Answer 2

4 tendons of flexor digitorum superficialis, 4 tendons of flexor digitorum profundus. Tendon of flexor carpi radialis (in it own synovial sheath), flexor pollicis longus.

Question 3

Which structures (other than tendons) pass through the carpal tunnel?

Answer 3

Median nerve.

Question 4

Which tendon from the anterior forearm blends with the flexor retinaculum?

Answer 4

Palmaris longus.

Question 5

Which structures pass into the hand not via the carpal tunnel?

Answer 5

Ulnar nerve, ulnar artery, palmar cutaneous branch of median nerve + ulnar nerves, superficial palmar branch of radial nerve.

Question 6

What form the borders of the anatomical snuffbox?

Answer 6

Tendon of extensor pollicis longus, extensor pollicis brevis + abductor pollicis longus. Scaphoid bone in the floor. Cutaneous branches of radial nerve superficially.

Question 7

Which structure is in the anatomical snuffbox?

Answer 7

Radial artery.

Question 8

Which vein commonly passes over the anatomical snuffbox?

Answer 8

Cephalic vein.