AO Spine Thoracolumbar Injury Classification (TL AOSIS)
AO Spine thoracolumbar injury classification, with the TL AOSIS severity score summed from it.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Morphology
- A4 - complete burst: both endplates, with the posterior wall involved
- Neurological status
- N3 - incomplete spinal cord or cauda equina injury
- M1 - posterior ligamentous complex injury that imaging leaves indeterminate
- Yes
Result: AO Spine A4 N3 M1, TL AOSIS 10 of a possible 13: surgical treatment preferred.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Morphology
- Neurological status
- M1 - posterior ligamentous complex injury that imaging leaves indeterminate
- M2 - patient-specific comorbidity (ankylosing spondylitis, DISH, severe osteoporosis, burns)
How this is calculated
Vaccaro AR, Oner C, Kepler CK, et al. AOSpine thoracolumbar spine injury classification system: fracture description, neurological status, and key modifiers. Spine (Phila Pa 1976). 2013;38(23):2028-2037. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.