Pelvic Injuries

Question 1

What are the possible mechanisms of sacral fractures?

Answer 1

• fall on buttocks
• direct trauma

Question 2

What is the most common type of sacral fracture?

Answer 2

horizontal sacral fracture
(3rd & 4th sacral level, below SI jt)

Question 3

What is the best radiographic view for a horizontal sacral fracture?

Answer 3

lateral

Question 4

What is the stability of an isolated horizontal sacral fracture?

Answer 4

stable

Question 5

What is the mechanism of a vertical sacral fracture?

Answer 5

indirect trauma to pelvis (eg. land on 1 leg/buttock)

Question 6

What is the clinical significance of a vertical sacral fracture?

Answer 6

50% pelvic organ damage

Question 7

What radiographic view is best for a vertical sacral fracture?

Answer 7

AP only

Question 8

What are the radiographic findings of a vertical sacral fracture?

Answer 8

disruption/offset/distortion of sacral foramina

Question 9

What is the most common orientation of coccygeal fractures?

Answer 9

transverse (horizontal)

Question 10

What other coccygeal injuries are associated with a fracture?

Answer 10

• anterior displacement
• subluxation or dislocation of sacrococcygeal jt

Question 11

What radiographic view is best for coccygeal injuries?

Answer 11

lateral

Question 12

What is the stability of an injury with 2 disruptions in the main pelvic ring?

Answer 12

unstable

Question 13

What is the stability of an injury with 2 disruptions in an obturator?

Answer 13

stable