Acetabular Fracture Characterization

Question 1

Fracture if both Iliopectineal and ilioischial lines intact

Answer 1

Posterior wall

Question 2

Only iliopectineal line disrupted

Answer 2

Anterior column fx

Anterior wall fx

Question 3

Only ilioischial line disrupted

Answer 3

Posterior column fx

Posterior column and posterior wall fx

Question 4

If both lines are disrupted, but obturator ring intact

Answer 4

Transverse fx

Transverse/posterior wall fx

Question 5

If both lines are disrupted, but obturator ring disrupted, and iliac wing intact

Answer 5

T-Type

Question 6

If both lines are disrupted, but obturator ring disrupted, and iliac wing disrupted

Answer 6

Anterior column-posterior hemitransverse

Associated both column fx

Question 7

When to use Kocher-Langenbeck

Answer 7

It’s similar to posterior approach to hip, so for PW, PC, transverse, transverse/PW, PC/PW, and some T-type

Question 8

When to use Ilioinguinal approach

Answer 8

AW, AC, ACPHT, associated both column, and some T-types

Question 9

Stoppa approach is what kind of approach

Answer 9

Ilioinguinal

Question 10

Nonop indications

Answer 10

nondisplaced or minimally displaced fx (<1 mm step and <2 mm gap); Roof arc > 45o on AP, iliac oblique, and obturator oblique; PW fx <20-30% of wall; severe communication in elderly with plan for THA when fx healed

Question 11

Indications for surgery

Answer 11

PW >20-30% or with hip instability, displacement >1 mm step or >2 mm gap; intraarticular bone fragments; irreducible fx-dislocation

Question 12

What is the spur sign

Answer 12

Seen on obturator oblique, posterior ilium that is undisplaced

Question 13

Name of the acetabular classification

Answer 13

Letournel

Question 14

What fx type do you see spur sign

Answer 14

Associated both column: the most common associated type

Question 15

What arterial injury causes femoral head AVN

Answer 15

MCFA