Wrist primary structures

Question 1

What structures form the anatomic snuffbox?

Answer 1

APL
EPL
EPB

Question 2

This structure is close to the deep surface of the flexor retinaculum. Median nerve passes through

Answer 2

carpal tunnel

Question 3

This is the only major ligament on the dorsal aspect of the wrist

Answer 3

dorsal radiocarpal ligament

Question 4

This retinaculum prevents tendons from bowstringing as the wrist is extended

Answer 4

extensor retinaculum

Question 5

This structure crosses the palmar aspect of the wrist, forming part of the carpal tunnel. Prevents bowstringing of tendons during wrist flexion

Answer 5

flexor retinaculum

Question 6

The flexor retinaculum serves as the attachment point for these muscles

Answer 6

thenar

hypothenar

Question 7

function of the interosseous membrane

Answer 7

stabilizer against axial forces applied at the wrist

Question 8

This ligament limits ulnar deviation and becomes taut when the wrist is in extremes of extension and flexion.

Answer 8

radiocarpal ligament

Question 9

TFCC

Answer 9

cartilaginous disc that sits between the ulna, lunate, and triquetrum

Question 10

Function of TFCC

Answer 10

• provides stability to wrist jt
• connects radius and ulna together
• allows force distribution through wrist

Question 11

Tunnel of Guyon located between

Answer 11

• hook of hamate
• pisiform
• palmar carpal ligament
• flexor retinaculum

Question 12

What passes through the tunnel of Guyon?

Answer 12

• ulnar nerve

- ulnar artery

Question 13

Compression of tunnel of Guyon may result in

Answer 13

ulnar tunnel syndrome