Diagnosis

Intact posterior arch, transverse fractures of the sacrum and coccyx (AO/OTA 61A3) 

print

All transverse fractures of the sacrum and coccyx are classified as AO/OTA 61A3 fractures.

For a more detailed classification, please refer to the spine section of the AO Surgery Reference.

Options
1. Sacrococcygeal dislocation 
2. Undisplaced sacral fracture 
3. Displaced sacral fracture 

1. Sacrococcygeal dislocation 

Sacrococcygeal dislocation

This is a dislocation through the sacro-coccygeal joint.

2. Undisplaced sacral fracture 

Undisplaced sacral fracture

This is a transverse undisplaced sacral body fracture below S2.

3. Displaced sacral fracture 

Displaced sacral fracture

This is a transverse displaced sacral body fracture below S2.