Intact posterior arch, displaced transverse sacral fracture

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.

Sacrococcygeal dislocation 

Sacrococcygeal dislocation

This is a dislocation through the sacro-coccygeal joint.

Undisplaced sacral fracture 

Undisplaced sacral fracture

This is a transverse undisplaced sacral body fracture below S2.

Displaced sacral fracture 

Displaced sacral fracture

This is a transverse displaced sacral body fracture below S2.

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v1.0 2015-12-10