Ankle and Lower Leg

Question 1

In order to place the ankle in a “true” AP, it should be –1–.

Answer 1

Rolled medially

Question 2

The CR should be directed to the –1– for the lower leg.

Answer 2

mid-shaft

Question 3

Which type of joint is the ankle joint?

Answer 3

Hinge

Question 4

Where is the lateral malleolus located on the leg?

Answer 4

distal fibula

Question 5

What other projection term refers to the AP projection of the foot?

Answer 5

Dorsoplantar

Question 6

Where should the CR be directed for the AP oblique projection of the foot?

Answer 6

To the base of the 3rd metatarsal

Question 7

Where should the CR be directed for the lateral ankle?

Answer 7

medial malleolus

Question 8

Which projection of the ankle should be performed to best demonstrate a ligamentous tear?

Answer 8

AP projection with inversion

Question 9

Which projection if the ankle best demonstrates the tibiofibular joint space free from superimposition?

Answer 9

AP oblique projection (medial rotation)

Question 10

With reference to the mortise joint, how many degrees should the ankle be rotated for the best demonstration of this joint?

Answer 10

20 degrees from the CR

Question 11

In order to adequately open the tibiotalar joint space for the ankle radiographs the foot should be placed in this position,

Answer 11

Dorsiflexion

Question 12

All of the following are criteria for the radiograph of the lateral lower leg EXCEPT:

Answer 12

Malleoli without superimposition

Question 13

The standard AP projection (medial rotaion) of the ankle will require –1– degrees of rotation.

Answer 13

45 degrees

Question 14

All radiographs of the ankle performed require the __1– included on the finished radiograph.

Answer 14

tuberosity of the 5th metatarsal

Question 15

State the 2 stress ankle positions.

Answer 15

1. Inversion

2. Eversion

Question 16

What will happen to the tibia and fibula when the lower leg is positioned in an AP with internal rotation of 45 degrees.?

Answer 16

Maximum interasseous space between the tibia ad fibula

shown without superimposition

Question 17

What will happen to the tibia and fibula when the lower leg is positioned in an AP with external rotation of 45 degrees?

Answer 17

Fibula superimposed by lateral portion of tibia

they will superimpose

Question 18

What femoral structures must be included on the lower leg radiographs?

Answer 18

femoral condyles

Question 19

What ankle structures must be included on the lower leg radiograph?

Answer 19

Talus, medial and lateral malleolus

Question 20

The mortise joint is defined as –1–.

Answer 20

joint space between the talus, tibia, and fibula

Question 21

The AP projection ankle should have the foot in –1– degrees of dorsiflexion.

Answer 21

90 degrees

Question 22

What 3 bones actually make up the ankle joint?

Answer 22

1. Talus
2. Tibia
3. Fibula

Question 23

What can you do as the student tech to even out the densities on a lower leg radiograph?

Answer 23

Thick part of the filter over ankle

Question 24

An imaginary line going through the malleoli in a mortise view/ position ankle should be –1– to the IR.

Answer 24

Parallel

Question 25

What is the correct SID used for an ankle exam?

Answer 25

40 SID

Question 26

What is done to the SID for a lower leg exam?

Answer 26

It should be increased to 48 SID

Question 27

If the CR is angled for an exam, how can we maintain the correct SID?

Answer 27

Lower 1 inch for every 5 degrees of CR angle

Question 28

Identify the following radiographs position and projection.

Answer 28

Position: lateral foot
Projection: mediolateral

Question 29

Identify the following radiographs position and projection.

Answer 29

Position: axial os calsis
Porjection: dorsoplantar

B. Position: Inversion stress of ankle
Projection: AP projection

Question 30

Label.

Answer 30

A. Fibula
B. Lateral Malleolus
C. Tibia
D. Medial Malleolus
E. Martise joint
F. Talus

Question 31

What is the posterior surface of the knee called?

Answer 31

Popliteal

Question 32

What is the method name used to achieve a lordotic chest radiograph?

Answer 32

Lindblom Method

Question 33

How many degrees should the knee be flexed for a routine lateral lower leg position?

Answer 33

20-30 degrees