Patella Positioning

Question 1

What IR is used for Patella views?

Answer 1

10x12

Question 2

What IR is used for most patella views?

Answer 2

40”

Question 3

What’s another name for the Axial projection supine flexion settegast method?

Answer 3

• Sunrise/sunset/skyline view
• Tangential patella

Question 4

What are the structures seen for the Axial projection supine flexion settegast method?

Answer 4

• Patella shown in profile
• Patellofemoral joint space should be equal and open
• Surface of the femoral condyles seen
• Projection is used for evaluation of vertical fracture

Question 5

How is the patient positioned for the Axial projection supine flexion settegast method?

Answer 5

• Patient sitting
• Knees slightly bent
• Feet on edge of table
• patient holding IR that’s angles to match the tube angle

Question 6

Where is the CR for the Axial projection supine flexion settegast method?

Answer 6

Directed to pass through the patellofemoral joint space

Question 7

How many degrees is the CR angles for the Axial projection supine flexion settegast method?

Answer 7

15-20 degrees caudally after matching tube with tib-fib

Question 8

What are the structures seen for a mediolateral patella?

Answer 8

• Lateral projection of patella
• Open patellofemoral joint
• Patella in profile

Question 9

How is the patient positioned for a mediolateral patella?

Answer 9

• Patient is rolled up onto affected knee to place femoral epicondyles perpendicular to IR
• Flex knee 5-10 degrees

Question 10

Where is the CR for a mediolateral patella?

Answer 10

Perpendicular entering at the mid-patellofemoral joint