W5- Hip/Pelvis Reviewing Radiologic Images

Question 1

What are some common views used to look at the hip and pelvis? (4)

Answer 1

• AP Pelvis
• AP Hip and Proximal Femur
• Lateral Frog Leg
• Axiolateral Inferiosuperior

Question 2

What are some things we can see in a AP view of the pelvis?

Answer 2

• Symphysis pubis in line with coccyx and midline of sacrum
• Ala of ilium width symmetric
• Width of obturator foramen symmetric
• PSIS
• Roof/anterior and posterior rim of acetabulum
• Coccyx
• Sacral foramina
• Greater/lesser trochanter
• Femoral neck/head

Question 3

• What is Shenton’s Line?
• What is Iliofemoral Line?
• What is the Femoral Neck Angle?

Answer 3

• Shenton’s Line = curved line drawn along the inferior border of the superior pubic ramus (superior border of the obturator foramen) and along the inferomedial border of the neck of femur. This line should be continuous and smooth.
• Iliofemoral Line = Curvilinear line, along the outer surface of the ilium, through the superior acetabular rim and the femoral neck.
• Femoral Neck Angle = Angle between the longitudinal femoral shaft axis and the femoral head-neck axis.

Question 4

What are some things we can see in a Lateral Frog-Leg view?

Answer 4

• Femoral neck/head

- Greater/lesser trochanters (ESPECIALLY LESSER)

Question 5

• Is MRI or CT best for bony alignment/pre-op planning, and fracture assessment?
• Is MRI or CT best for detecting lesions of the labrum, marrow, cartilage, and soft tissues?

Answer 5

• CT

- MRI