title: Denis classification
text: # Denis classification
  
  The Denis classification is a system of categorizing sacral fractures.
  
  ## Classification
  
  | Zone | Description |
  | - | - |
  | I | Fracture lateral to the sacral foramen |
  | II | Fracture through the sacral foramen |
  | III | Fracture medial to the sacral foramen extending into the spinal canal |
  