Gehweiler classification of atlas fractures (diagrams)

Discussion:
  • type 1: fractures of the anterior arch
  • type 2: fractures of the posterior arch and are usually bilateral
  • type 3: fractures involving the anterior and posterior arch (Jefferson burst fracture)
    • type 3a: intact transverse atlantal ligament
    • type 3b: disrupted transverse atlantal ligament complex
      • Dickman type 1: ligamentous disruption
      • Dickman type 2: bony avulsion with an intact ligament transverse atlantal ligament
  • type 4: fractures of the lateral mass
  • type 5: isolated fractures of the C1 transverse process
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