Cite

Copy

Tap on and choose 'Add to Home Screen' to create a shortcut app

Tap on and choose 'Add to Home Screen/Install App' to create a shortcut app

Thoracolumbar AOSpine Injury Classification System

This page was last updated on April 8th, 2024

In 2016 the AOSpine published an algorithm for determining the need for surgical intervention on injuries to the thoracolumbar spine injuries (37).

Type of InjurySubtype Injury# Points Assigned
Type A – Compression Fx
A0 – Minimal Injury

(e.g. transverse process fx)

0
A1 – Compression Fx1
A2 – Pincer Compression Fx2
A3 – Incomplete Burst Fx

(only involves one end-plate)

3
A4 – Complete Burst Fx5
Type B – Tension Band Injury
B1 – Osseous Disruption Tension Band5
B2 – Posterior Tension Band Injury

(including ligamentous injury)

6
B3 – Anterior Tension Band Injury7
Type C – Translational Injury8
Neurological Injury
N1 – None, neurologically intact0
N2 – Resolved, transient symptoms1
N3 – Persisting radicular symptoms2
N4 – Incomplete spinal cord injury4
N5 – Complete spinal cord injury4
N6 – Neurological exam unattainable3
Patient Specific Modifiers
M11
M20
  • Nonsurgical management: Recommended when the sum of all categories is 0–3.
  • Surgical management: Recommended when the sum of all categories is ≥5.
  • Consideration of either intervention: Necessary when the total equals 4.
ISPN Library logo