Acetabular Fractures

Question 1

Acetabular inclination and anteversion?

Answer 1

Median lateral inclination of the acetabulum is 40-48 degrees

Acetabular anteversion of 18-21 degrees

Question 2

What is the corona mortis?

When is it at risk?

Answer 2

Anastamosis of the inferior epigastric artery (external iliac artery) and obturator artery (internal iliac artery).

At risk with lateral dissection of the superior pubic ramus

Question 3

Judet and Letournel fracture classification (5 elementary and 5 associated)

Answer 3

Elementary:

1. Anterior wall
2. Posterior wall
3. Anterior column
4. Posterior column
5. Transverse

Associated:

6. Both column
7. Transverse and posterior wall
8. T-type
9. Anterior column or wall posterior hemi-transverse
10. Posterior column and posterior wall

Question 4

4 most common fracture patterns in younger patients?

Answer 4

1. Posterior wall

Transverse family

2. Transverse
3. T-type
4. Transverse and posterior wall

Question 5

4 most common fracture patterns in elderly patients?

Answer 5

1. Anterior column
2. Anterior column posterior hemi-transverse
3. Both column

Question 6

Which is the most common type of acetabulum fracture?

Answer 6

Posterior wall

Question 7

Classic radiograph finding for a posterior wall fracture and what view do you see it?

Answer 7

Gull sign - impaction of superomedial roof

Obturator oblique