Radiography: Pelvis and Hip

Question 1

When performing an L5–S1 spot projection, where should the central ray be positioned?

Answer 1

The central ray should be positioned 1.5 inches inferior to the iliac crest and 2 inches posterior to the anterior superior iliac spine.

Question 2

A correctly positioned anteroposterior projection/view of the pelvis should display the coccyx aligned with the ________________.

Answer 2

pubic symphysis

Question 3

If injury to both hips is suspected, which radiographic method/view should be used in addition to the anteroposterior view of the pelvis?

Answer 3

Clements-Nakayama method (also called the axiolateral inferosuperior trauma method)

Question 4

Which 2 positioning landmarks of the pelvis and hip are located at the same level?

Answer 4

The greater trochanter and symphysis pubis

Question 5

The ____________ and the intertrochanteric crest are the 2 most common fracture sites of the pelvis and hip.

Answer 5

femoral neck

Question 6

A/an ____________ view of the pelvis is performed when there is a suspected pelvic or sacral fracture, utilizing a 40° caudad beam, with the patient positioned supine, and their legs extended in neutral rotation.

Answer 6

axial inlet

Question 7

What is the name of the radiographic study of the spinal cord/canal and subarachnoid spaces within the spinal canal that’s typically performed after a contrast injection?

Answer 7

A myelogram

Question 8

Which radiographic method/view should be used for diagnosing fractures along the posterior portion of the acetabulum?

Answer 8

The Judet method/view

Question 9

When radiologic assessment of the pelvic ring is needed, the ________________ should be used.

Answer 9

anteroposterior axial inlet projection/view

Question 10

In order to properly demonstrate the sacroiliac joints in an anteroposterior projection/view, without foreshortening, a ____ cephalic angle should be used for male patients and a ____ cephalic angle should be used for female patients.

Answer 10

30° for male patients and 35° for female patients

Question 11

Which bones comprise the hip (innominate) of the pelvis?

Answer 11

The ilium, ischium, and pubis

Question 12

A patient’s thighs should be abducted by what angle for an anteroposterior oblique projection of the femoral necks (the modified Cleaves method)?

Answer 12

45°

Question 13

With the patient laying supine on the table, how should the patient’s legs and feet be positioned for an AP bilateral frog-leg projection of the hip?

Answer 13

The plantar surfaces of the patient’s feet should be placed together and both femora should be abducted 40° to 45° from. vertical.

Question 14

The ____________forms the posteroinferior portion of the pelvis.

Answer 14

ischium