Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 12/13/2025

Management of Atlanto-Occipital Dislocation

Initial Stabilization

  • The American Society of Anesthesiologists recommends maintaining manual in-line stabilization during any airway management procedures, with removal of the anterior collar portion if intubation is required 1, 2

Evidence Against Prolonged Collar Use

  • Prolonged immobilization beyond 48-72 hours causes significant morbidity, including pressure sores, increased intracranial pressure, ventilator-associated pneumonia, delirium, and failed enteral nutrition, according to the American College of Surgeons 2, 3
  • Cervical collars provide incomplete immobilization, particularly at the craniocervical junction where AOD occurs, as stated by the American Association of Neurological Surgeons 2, 3
  • The documented harms of prolonged collar use often exceed the risks of the injury itself when definitive stabilization is not performed, according to the American College of Emergency Physicians 2, 4

Collar Limitations in AOD

  • Collars paradoxically may not effectively restrict movement of unstable cervical injuries at the craniocervical junction, as reported by the American Academy of Orthopaedic Surgeons 2
  • In cadaveric models with unstable injuries, collars caused greater cervical spine movement compared to manual stabilization, according to the Journal of Orthopaedic Trauma 2, 4
  • No high-quality evidence demonstrates clinical benefit of collar use as definitive treatment for unstable injuries like AOD, as stated by the American Heart Association 5, 2

Critical Clinical Pitfalls

  • Patients should not be kept in collars beyond 72 hours without definitive surgical planning, as complications of prolonged immobilization accumulate rapidly, according to the American College of Surgeons 2, 3

REFERENCES

2

Cervical Collar Use in Trauma Patients [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

3

Cervical Collar Use Guidelines for Non-Operative Cervical Spine Fractures [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

4

Cervical Collar Use in Trauma Patients [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025