Foot Positioning

Question 1

What IR is used for foot views?

Answer 1

10x12

Question 2

What SID is used for foot views?

Answer 2

40”

Question 3

What structures are seen for a dorsoplantar AP/AP axial foot?

Answer 3

• AP projection of entire foot
• All tarsals distal to the talus, metatarsals, & phalanges
• Use of angle opens tarsal articulations
• Overlap the 2nd-5th metatarsal bases
• Open joint space between the medial and intermediate cuneiforms

Question 4

How is the patient positioned for a dorsoplantar AP/AP axial foot?

Answer 4

• Patient is supine or sitting on table
• Bend patients knee & place foot flat on surface of IR

Question 5

Where is the CR for a dorsoplantar AP/AP axial foot?

Answer 5

Entering at base of 3rd metarsal

Question 6

At what angle is the CR for a dorsoplantar AP/AP axial foot?

Answer 6

Either 0 or 10 degrees

Question 7

What structures are seen for a 30-degree medial oblique foot?

Answer 7

• Oblique projection of entire foot
• Sinus tarsi best seen
• Tuberosity of 5th metatarsal well visualised
• 3rd-5th metatarsal bases free of superimposition

Question 8

How is the patient positioned for a 30-degree medial oblique foot?

Answer 8

• Begin in AP position
• Rotate foot medially
• Plantar surface of foot should form a 30-degree angle with IR

Question 9

Where is the CR for a 30-degree medial oblique foot?

Answer 9

Perpendicular to base of 3rd metatarsal

Question 10

What would a 30-degree lateral oblique be used to demonstrate?

Answer 10

1st & 2nd metatarsal bases

Question 11

What views is used to demonstrate the 1st & 2nd metatarsal bases?

Answer 11

30-degree lateral oblique

Question 12

What are the structures seen for a mediolateral foot?

Answer 12

• Lateral projection of foot & ankle
• Include distal tib-fib articulation
• Demonstrates anterior or posterior displacements of fracture or foreign bodies
• Tibiotalar joints are seen
• Fibula overlapping posterior portion of tibia

Question 13

How is the patient positioned for a mediolateral foot?

Answer 13

• Begin in AP
• Then roll patient up onto hip of affected side
• Flex knee so foot is lateral and parallel to IR
• Dorsiflex foot 90-degrees

Question 14

Where is the plantar surface for a mediolateral foot?

Answer 14

Perpendicular to IR

Question 15

Where is the CR for a mediolateral foot?

Answer 15

Perpendicular at the level of the base of 3rd metatarsal

Question 16

What view do you see an overlap of the 2nd-5th metatarsal bases?

Answer 16

Dorsoplantar AP/AP axial

Question 17

What view do you see an oblique projection of the entire foot?

Answer 17

30-degree medial oblique

Question 18

What view do you see the tibiotalar joint?

Answer 18

Mediolateral foot

Question 19

What view do you see the open joint space between the medial and intermediate cuneiforms?

Answer 19

Dorsoplantar AP/AP axial

Question 20

In what view is the sinus tarsi best seen?

Answer 20

30-degree medial oblique

Question 21

What view is the fibula overlapping the posterior portion of the tibia?

Answer 21

Mediolateral foot

Question 22

In what view is the tuberosity of the 5th metatarsal well visualized?

Answer 22

30-degree medial oblique

Question 23

In what view is the 3rd-5th metatarsal bases free of superimposition?

Answer 23

30-degree medial oblique

Question 24

In what view is the foot in a true AP?

Answer 24

Dorsoplantar AP/AP axial

Question 25

What view do you see the foot & ankle in a lateral position?

Answer 25

Mediolateral foot

Question 26

In what view are all the tarsals distal to the talus, metatarsals, and phalanges?

Answer 26

Dorsoplantar AP/AP axial

Question 27

In what view do you see distal tib-fib articulation?

Answer 27

Mediolateral foot

Question 28

In what view can the use of an angle open the tarsal articulations?

Answer 28

Dorsoplantar AP/AP axial

Question 29

Which view demonstrates anterior or posterior displacements of fractures or foreign bodies?

Answer 29

Mediolateral foot