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Rotary atlantoaxial dislocation (axial T2 MR)

Note the significant loss of cerebrospinal fluid space due to the subluxation. The spinal cord is normal in shape, and size and there was no associated spinal cord injury. (Contributed by Dr. David Choi.)

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Associated Disorders

  • Ankylosing spondylitis
  • Chiari malformation
  • Cleidocranial dysplasia
  • Down syndrome
  • Ehlers-Danlos type IV
  • Grisel syndrome
  • Head and neck infection
  • Inflammatory arthritides
  • Marfan disease
  • Morquio syndrome (mucopolysaccharidosis type IV)
  • Primary cervical dystonia
  • Reiter syndrome
  • Systemic lupus erythematosus
  • Trauma
  • Tuberculosis
  • Tuberculous spondylitis