Skip to content

Spinal Trauma.

Osteoporotic Fracture. AO Classification.

AO Osteoporotic Fracture

AO Osteoporotic Fracture

AO - DGOU Classification of OF.

DGOU = German Society of Orthopaedics. Dr Klaus SCHAKE

Reviewed 700 OFs and found the standard classifications as unhelpful as:

  • Most Common were A1 and A3, but not quite fitting.
  • B and C were uncommon.
  • Neuro deficits were rare. (2%)
  • But, progressive kyphosis was common esp with T-score <-3.

And go onto point out that:

  • As well as fracture morphology being different from healthy bone,
  • Morphology of the fractures seen in these patients does not tell whether they did or did not have a prior trauma.
  • Fractures change over time leading to potential instability.
  • Treatment more a function of prior function and co-morbidities than the fracture itself.

The OF classification is based on simple morphology from plain film, CT and/or MR and goes from 1 to 5 relating to greater instability.

"use in all patients with osteoporosis or suspected osteoporosis in all situations"

Osteoporosis defined as < -2.5 on T-score.


Thoracolumbar Injury. AO Classification.

AO Thoracolumbar Injury score

AO Thoracolumbar Injury score


Upper Cervical Fracture. AO Classification.

AO Upper Cervical Fracture

AO Upper Cervical Fracture


Subaxial Cervical Fracture. AO Classification.

AO Subaxial Cervical Fracture

AO Subaxial Cervical Fracture


Sacral Fractures AO Classification.

NB: The C0 fracture which is basically 99% of them.

AO Sacral Fracture

AO Sacral Fracture