Atlantoaxial Instability

  • Etiology:
  • Imaging: when measuring the atlanto-dens interval on lateral flexion / extension / neutral cervical spine radiographs, if the atlanto-dens interval is > 5 mm on any view there is instability, if there is > 1-2 mm of motion between flexion and extension there is instability
  • DDX:
  • Complications:
  • Treatment:
  • Clinical:

Cases of Atlantoaxial Instability