Chpt 4 - Upper Extremities

Question 1

Four main groups of the upper limb

Answer 1

hand and wrist
forearm
arm
shoulder girdle

Question 2

How many bones in each hand and wrist

Answer 2

27

Question 3

How many bones are in the phalanges?

Answer 3

14

Question 4

How many metacarpals?

Answer 4

5

Question 5

How many carpals?

Answer 5

8

Question 6

What number is the thumb? The pinky?

Answer 6

1st digit
5th digit

Question 7

Three parts of the phalanx and metacarpal starting proximal

Answer 7

base
body
head

Question 8

What bones make up the wrist? palm? fingers?

Answer 8

carpals
metacarpals
phalanges

Question 9

Why are the joints/articulations between the individual bones of the upper limb important in radiology?

Answer 9

small chip fractures may occur near the joint spaces

Question 10

the joint between the first digits distal and proximal phalanx

Answer 10

interphalangeal (IP) joint

Question 11

the joint between the metacarpals and the proximal phalanx

Answer 11

(1-5) metacarpophalangeal (MCP) joint

Question 12

What should be included with the images of a thumb?

Answer 12

from the distal phalanx to the base of the first metacarpal

Question 13

the joint between the (2-5) digit distal and middle phalanx?

Answer 13

Proximal interphalangeal (PIP) joint

Question 14

the joint between the (2-5) digit middle and distal phalanx?

Answer 14

Distal interphalangeal (DIP) joint

Question 15

the joints between the carpals and metacarpals?

Answer 15

Carpometacarpal (CMC) joint

Question 16

What carpal articulates with the first MC?

Answer 16

trapezium

Question 17

What carpal articulates with the second MC?

Answer 17

trapezoid

Question 18

What carpal articulates with the third MC?

Answer 18

capitate

Question 19

What carpal articulates with the fourth and fifth MC?

Answer 19

hamate

Question 20

the boat-shaped bone that articulates with the radius

Answer 20

scaphoid

Question 21

most frequently fractured carpal bone

Answer 21

scaphoid

Question 22

the moon-shaped bone that also articulates with the radius

Answer 22

lunate

Question 23

largest carpal bone

Answer 23

capitate

Question 24

hook-like process of the hamate

Answer 24

hamulus

Question 25

what is the concave area in the palm through which major nerves and tendons pass?

Answer 25

carpal sulcus

Question 26

the joint where the radius articulates with the scaphoid and lunate

Answer 26

radiocarpal joint

Question 27

joint between the distal radius and ulna

Answer 27

distal radioulnar joint

Question 28

ligament that’s attached to the styloid process of the ulna and fans out to attach to the triquetrum and the pisiform

Answer 28

ulnar collateral ligament

Question 29

ligament that extends from the styloid process of the radius primarily to the lateral side of the scaphoid and trapezium

Answer 29

radial collateral ligament

Question 30

What carpals are best demonstrated with an ulnar deviation?

Answer 30

scaphoid, trapezium, trapezoid

Question 31

What carpals are best demonstrated with a radial deviation?

Answer 31

hamate, pisiform, triquetrum, lunate

Question 32

What views is the scaphoid fat stripe best visualized on?

Answer 32

PA and Oblique projections

Question 33

Where is the scaphoid fat stripe located?

Answer 33

between the radial ligament and adjoining muscle tendons, immediately lateral to the scaphoid

Question 34

Displacement/absence of what fat stripe may be the only indicator of a fracture on the radial aspect of the wrist

Answer 34

scaphoid fat stripe

Question 35

What view best demonstrates the pronator fat stripe

Answer 35

Lateral view of the wrist

Question 36

Where is the pronator fat stripe located?

Answer 36

1/4 inch from the anterior surface of the radius

Question 37

Increase in exposure for casts -
small to medium plaster:
large plaster:
fiberglass:

Answer 37

• 5 to 7 kVp
• 8 to 10 kVp
• 3 to 4 kVp