CE1 Lower Extremity

Front

What is the AP oblique ankle projection?

Back

A radiographic view of the ankle obtained by rotating the leg and foot 45 degrees medially, allowing visualization of the ankle joint and surrounding structures.

Front

Where is the CR location for an AP projection of the knee?

Back

1/2 inch below the patellar apex.

Front

How many degrees should the leg and foot be rotated medially to demonstrate the ankle mortise?

Back

15-20 degrees.

Front

What part of the patella is referred to as the apex?

Back

The pointed lower part of the patella.

Front

What is the degree of angulation for the tangential projection of the patella (Settegast method)?

Back

Variable, depending on the degree of knee flexion.

Front

What is the purpose of the AP oblique ankle projection?

Back

To visualize the ankle joint and assess for fractures or other abnormalities.

Front

What anatomical structures are best visualized in the AP oblique ankle projection?

Back

The distal fibula, the talus, and the joint space between the tibia and fibula.

Front

What is the significance of the CR location in knee radiography?

Back

It ensures that the knee joint is centered in the image for accurate assessment.

Front

What is the base of the patella?

Back

The broad upper part of the patella that articulates with the femur.

Front

Why is the 15-20 degree medial rotation important for ankle mortise imaging?

Back

It opens up the joint space between the tibia and fibula, allowing for better visualization of potential injuries.