SC Joint Test

Question 1

For a lateral projection of the ankle, the central ray must enter the:

a.) medial malleolus
b.) tibiofibular joint
c.) lateral malleolus
d.) navicular

Answer 1

a.) medial malleolus

Question 2

Clubfoot is also called:

a.) tailpes equinovirus
b.) congentital hip dysplasia
c.) trimalleolar fracture
d.) none of the above

Answer 2

a.) talipes equinovirus

Question 3

Which of the following part positions is correct for PA SC joints?

a.) right shoulder should be raised
b.) left shoulder should be rotated up
c.) shoulders should be rotated
d.) no rotation of shoulders

Answer 3

d.) no rotation of shoulders

Question 4

Equal distance from the vertebral column of the SC joints should demonstrated on the PA projection.

a.) true
b.) false

Answer 4

a.) true

Question 5

Which of the following evaluation criteria should be demonstrated on the RAO/LAO SC joints?

a.) manubruim
b.) medial clavicles
c.) SC joints
d.) All should be demonstrated on the downside

Answer 5

a.) maubrium
b.) medial clavicles
c.) SC joints
d.) all should be demonstrated on the downside

Question 6

What are the two main structures shown on the ankle mortise view?

a.) ankle mortise in profile
b.) all three sides of mortise joint should be visulaized
c.) distal tibia and fibula overlap some of the talus
d.) none of the above

Answer 6

b.) all three sides of mortise joint should be visulaized

Question 7

For the PA oblique projection of the SC joints, the CR should be centered to:

a.) C7
b.) T1
c.) 1st rib
d.) T2-T3

Answer 7

d.) T2-T3

Question 8

Which of the following is the correct respiration for PA projection of the SC Joints?

a.) double inspiration
b.) double expiration
c.) suspended on expiration
d.) suspended on inspiration

Answer 8

c.) suspended on expiration

Question 9

What is the purpose for dorsiflexion on the lateral ankle view? Choose all that apply.

a.) prevents medial rotation
b.) prevents lateral rotation
c.) lower leg and ankle should form 90 degree angle

Answer 9

b.) prevents lateral rotation
c.) lower leg and ankle shold form 90 degree angle

Question 10

Evaluation Criteria: Choose all that apply.
Medial oblique ankle
a.) distal tibia, fibula and talus
b.) talus slightly overlapping distal fibula
c.) distal tibia and fibula overlap some of talus
d.) talus with proper brightness

1 only
1
2
3

Answer 10

1
3

Question 11

On the RAO SC joints which side will best be demonstrated? Choose all that apply.

a.) right side
b.) down side
c.) left side
d.) up side

Answer 11

a.) right side
b.) down side

Question 12

The medial and lateral oblique projections of the ankle require the leg and foot to be rotated how many degrees?

a.) 15 to 20 degrees
b.) 15 degrees
c.) 20 degrees
d.) 45 degrees

Answer 12

d.) 45 degrees

Question 13

What is the purpose for weight bearing ankle view?

a.) identify any widening of ankle joint space
b.) identify any ankle fractures
c.) narrowing of ankle joint space
d.) ankle joint closed

Answer 13

c.) narrowing of ankle joint apce

Question 14

Where should the CR be directed on the RAO/ LAO projection of the SC joints? Choose all that apply.

a.) 1 to 2’’ medial toward upside to MSP
b.) 3’’ proximal to vertebral prominens
c.) 1 to 2’’ lateral (toward upside to MSP
d.) 3’’ distal to vertebral prominens

Answer 14

c.) 1 to 2’’ lateral toward upside to MSP
d.) 3’’ distal to vertebral prominens

Question 15

A correctly positioned lateral ankle will demonstrate the lateral malleolus superimposed over the posterior half of the tibia.

a.) true
b.) false

Answer 15

a.) true

Question 16

Which of the following forms the ankle “mortise”?

1.) lateral malleolus of the fibula
2.) medial malleolus of the tibia
3.) inferior surface of the tibia

a.) 1 and 2
b.) 1 and 3
c.) 1, 2 and 3
d.) 2 and 3

Answer 16

c.) 1, 2 and 3

Question 17

A portable grid should be used if the patient must be doen on the strectcher for SC joints.

a.) true
b.) false

Answer 17

a.) true

Question 18

Evaluation Criteria: choose all that apply

lateral ankle

1.) distal tibia and fibia talus, calcaneus and adjacent tarsals
2.) tibiotalar joint well visualized
3.) fibula over posterior half of tibia
4.) fifth metatarsal and tuberosity should be seen to check for jones fracture

Answer 18

1
2
3
4

Question 19

Less obliquity of 5 to 10 degrees opposite SC joints (upside) would be visualized next to vertebral column.

a.) true
b.) false

Answer 19

a.) true

Question 20

The medial malleolus is part of the:

a.) fibula
b.) talus
c.) calcaneus
d.) tibia

Answer 20

d.) tibia

Question 21

WHat is the purpose for the AP stress views of the ankle?

a.) to demonstrate possible stress fractures
b.) to demonstrate possible joint seperations or ligament tear
c.) to demonstrate loose bodies in ankle joint
d.) to demonstrate tears in the joint meniscus

Answer 21

b.) to demonstrate possible joint seperations or ligament tear

Question 22

The lateral ankle position should be taken __________ degrees from the AP.

a.) 45
b.) 145
c.) 75
d.) 90

Answer 22

d.) 90

Question 23

Which of the following indicates correct patient rotation of the RAO/LAO SC joints ?

a.) up SC joint with superimposition of manubruim
b.) down SC joint with no superimposition of vertebral column
c.) down SC joint with superimposition of vertebral column
d.) upside only

Answer 23

b.) down SC joint with no superimposition of vertebral column

Question 24

Evaluation Criteria: Choose all that apply.
AP Ankle

1.) medial and lateral malleoli
2.) normal overlapping of tibiofibular articulation
3.) tibiofibular articulation open
4.) talus slightly overlapping the distal fibula
5.) distal tibia and fibula over lap some of the talus
6.) no overlapping of the medial talomalleolar articulation
7.) talus with proper brightness
8.) tibiotalar joint space

a.) 1
b.) 2
c.) 7 and 8
d.) 4 and 6

Answer 24

a.) 1
b.) 2
c.) 7 and 8
d.) 4 and 6

Question 25

With a 10 to 15 degree rotation of the patients thorax the SC joint will be projected to the __________side.

a.) opposite
b.) same as rotated
c.) left
d.) right

Answer 25

a.) opposite

Question 26

Extending the ankle joint or pointing the foot and toes are pulled back toward the ankle and lower leg is called:

a.) plantar flexion
b.) dorsiflexion
c.) eversion
d.) inversion

Answer 26

b.) dorsiflexion

Question 27

For the RAO/LAO projection of the SC joints the downside will be foreshortened

a.) true
b.) false

Answer 27

b.) false

Question 28

WHich of the following evaluation criteria should be demonstrated on the PA SC joints? Choose all that apply.

a.) SC joint on upside will be foreshortened
b. lateral end of clavicles
c.) medial portion of clavicles lateral to vertebral column
d.) lateral aspect of manubrium

Answer 28

c.) medial portion of clavicles lateral to vertebral column
d.) lateral aspect of manubrium

Question 29

A correctly positioned AP 45 degree medial oblique ankle projection frequently may also demonstrate a fracture of the base of the fifth metatarsal if present.

a.) true
b.) false

Answer 29

a.) true

Question 30

ON the LAO SC joint which side will be best demonstrated? Choose all that apply.

a.) left
b.) downside
c.) right
d.) upside

Answer 30

a.) left
b.) downside

Question 31

For an AP projection of the ankle, the central ray must enter the:

a.) ankle joint, midway between the malleoli
b.) talofibular joint
c.) talus
d.) subtalar joint

Answer 31

a.) ankle joint midway between the malleli

Question 32

How much should the patient be rotated for the RAO/LAO SC joint?

a.) 5 degrees with upside arm in front of patient
b.) 10 degrees only with upside arm down by patients side
c.) 10 to 15 degrees with upside arm in front of patient
d.) 10 to 15 degrees with upside arm down by patients side

Answer 32

c.) 10 to 15 degrres with upside arm in front of patient

Question 33

For the PA projection of the SC joints, the CR should be directed to: choose all that apply

a.) C7
b.) T1
c.) T2-T3
d.) 3’’ distal to vertebral prominens

Answer 33

c.) T2-T3
d.) 3’’ distal to vertebral prominens