Abos - Trauma Principles & Pelvic Trauma - Fractures Of The Acetabulum

Front 1

Acetabulum fracture outcome has been demonstrated to correlate with what four factors?

Back 1

Accuracy of reduction
Age
Complexity
Femoral head damage

Front 2

What is the significance of vertical versus horizontal fracture lines on axial CT?

Back 2

Vertical fracture line = transverse fracture
Horizontal fracture line = column injury (anterior or posterior)

Front 3

Posterior wall fractures are generally stable if <__% of wall is involved, and generally unstable if >__% if the wall is involved?

Back 3

<33% generally stable
>50% generally unstable

Front 4

Posterior wall fracture outcomes depend most heavily on what factor?

Back 4

Accuracy of reduction

Front 5

If the reduction is anatomic, then the outcome has been shown to be dependent on what three factors?

Back 5

Delay/osteonecrosis
Patient age
Comminution

Front 6

What radiographic sign is suggestive of a both-column fracture of the acetabulum?

Back 6

Spur sign on obturator oblique

Front 7

An extensile approach is recommended instead of an ilioinguinal approach in what three circumstances?

Back 7

Posterior comminution
Older than 2 weeks
Displaced sacroiliac (SI) fracture

Front 8

How can T-type acetabular fractures be differentiated from transverse?

Back 8

Obturator ring also fractured in T-type

Front 9

What are the two possible approaches for open reduction with internal fixation (ORIF) of a T-type fracture?

Back 9

Anterior/posterior
Extensile

Front 10

What is the recommended treatment for a nondisplaced transtectal acetabular fracture?

Back 10

6 weeks touch down weight bearing

Front 11

An extensile approach should be considered for a transverse fracture in what circumstance?

Back 11

Associated roof impaction

Front 12

Where is the lateral window of the ilioinguinal approach? To what two areas does it provide access?

Back 12

Posterior to iliopectineal fascia
Access to ilia fossa, anterior SI joint

Front 13

Between what structures is the middle window? To what two areas does it provide access?

Back 13

Between iliopectineal fascia/external iliac artery
Access to pelvic brim, superior public ramus

Front 14

Where is the medial window? To what two area does it provide access?

Back 14

Medial to external iliac artery, spermatic cord
Access to quadrilateral plate, retropubic space