Week 8 - Forearm, Wrist & Hand Qs

Question 1

What function do muscles on the ventral side do?

Answer 1

flexors

Question 2

What function do muscles on the dorsal side do?

Answer 2

extensors

Question 3

What is the meaty muscle on the anterior hand at the base of the thumb?

Answer 3

flexor pollicis brevis

Question 4

What is the muscle deep to the meaty muscle at the base of the thumb?

Answer 4

adductor pollicis

Question 5

what do the ventral flexor group of muscles do?

Answer 5

contract to flex the wrist/hand/fingers

Question 6

what do the dorsal extensor group of muscles do?

Answer 6

contract to extend the wrist/hand/fingers

Question 7

which flexor covers the entire length of the anterior medial forearm and continues to the end of digits 2-5?

Answer 7

flexor digitorum profoundus

Question 8

which flexor covers the entire length of the anterior lateral forearm towards the thumb?

Answer 8

flexor pollicis longus

Question 9

what muscle lies deep to the two large flexors of the forearm?

Answer 9

pronator quadratus

Question 10

which carpal bone can be palpated on the anterior side at the medial base of the palm?

Answer 10

pisiform

Question 11

proximal row of carpal bones, lateral -> medial

Answer 11

scaphoid, lunate, triquetral, pisiform

Question 12

distal row of carpal bones, lateral -> medial

Answer 12

trapezium, trapezoid, capitate, hamate

Question 13

what is tfcc?

Answer 13

triangular fibrocartilage complex

Question 14

where is tfcc?

Answer 14

medial to the lunate carpal bone

Question 15

what is the most common ligament issue in the wrist?

Answer 15

torn triangular fibrocartilage complex (tfcc)

Question 16

where are the sesmoid bones?

Answer 16

two small bones at the 1st metacarpophalangeal joint

Question 17

what forms the carpal tunnel?

Answer 17

hook of the hamate & tubercle of the trapezium

Question 18

what is carpal tunnel syndrome?

Answer 18

compression of the median nerve passing through the carpal tunnel

Question 19

this is osteomalacia of the lunate bone

Answer 19

Kienbock’s Disease

Question 20

avascular necrosis with fragmentation and collapse of the lunate is

Answer 20

Kienbock’s Disease

Question 21

What is a useful sequence for the evaluation of bone contusions or fractures?

Answer 21

STIR
(short tau inversion recovery)

Question 22

For axial slice planning of a hand, coverage should include from the fingertips to ____________.

Answer 22

just past the wrist

Question 23

When imaging the wrist in MRI, in order to achieve high spatial resolution, a ________ FOV would be used, in conjunction with a dedicated wrist or local surface coil.

Answer 23

small

Question 24

The optimal imaging plane to demonstrate the carpal bones and the interosseous ligaments would be:

Answer 24

coronal

Question 25

The optimal imaging plane for visualization of a TFCC tear is:

Answer 25

coronal

Question 26

What is the optimal slice orientation to view the median nerve?

Answer 26

axial

Question 27

Which nerve is responsible for carpal tunnel syndrome?

Answer 27

median

Question 28

This image is a ____ weighted image acquired in the _______ scan plane.

Answer 28

T1; Axial

Question 29

What plane is being planned here?

Answer 29

coronal

Question 30

This image is a ____ weighted image acquired in the _______ scan plane.

Answer 30

T1; Coronal

Question 31

When imaging the extremities, _______________ would be used as a marker to delineate the area of interest for both radiologist and referring physician.

Answer 31

Vitamin E Tablet

Question 32

On a T1 weighted image, edema appears _______.

Answer 32

dark

Question 33

When slice planning on a sagittal hand MRI, angle __________ to the __________ on the __________ scout.

Answer 33

parallel; metacarpals; coronal

Question 34

When imaging the wrist, the optimal plane to visualize the carpal tunnel is:

Answer 34

axial

Question 35

What is the structure that consists of a series of short ligaments that connect the palmar plates of the metacarpal heads is called?

Answer 35

deep transverse metacarpal ligament (DTML)

Question 36

what is the midcarpal joint?

Answer 36

the articulation between the proximal row of carpal bones and the distal row of carpal bones