Spinopelvic Dissociation: Comparison of Outcomes of Percutaneous versus Open Fixation Strategies

Table 2

Fracture pattern classification. All fracture patterns were AO sacrum classification type C.

AO Spine

C0 (nondisplaced U type sacrum fracture)

C1 (alternative sacrum U type fracture without posterior instability)

C2 (bilateral complete type B injuries without transverse fracture)

C3 (displaced U type sacrum fracture)

Modifiers

–

M3

M4

M3, 4

–

M3

M4

M3, 4

–

M3

M4

M3, 4

–

M3

M4

M3, 4

Open

5

2

0

1

1

9

3

Closed

8

5

0

0

8

2

1

2