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Atlanto-occipital dislocation: case report and discussion
David A McKenna1, Clare J Roche, W Kit Lee
1Department of Radiology, University College Hospital Galway, Newcastle, Galway City, County Galway, Ireland. radiologyresident@hotmail.com
CJEM
|December 21, 2006
Summary
Atlanto-occipital dislocation (AOD) is a severe spinal trauma. Early recognition through careful imaging is crucial for diagnosing AOD, even without neurological signs.
Area of Science:
- Traumatology
- Radiology
- Emergency Medicine
Background:
- Atlanto-occipital dislocation (AOD) is a severe spinal trauma, often fatal, accounting for 15% of traumatic deaths.
- AOD is more common in children and linked to hyperextension injuries.
- Improved resuscitation allows more AOD patients to reach the emergency department.
Observation:
- This case report details a 46-year-old woman with AOD after a motor vehicle crash.
- Subtle signs of AOD necessitate high clinical suspicion in all neck injury patients.
- Neurologic deficits are not always present in AOD survivors.
Findings:
- A systematic approach to cranio-cervical assessment on lateral cervical X-rays is vital.
- Appropriate use of CT scanning is essential for accurate AOD diagnosis.
- Ligamentous disruption allows abnormal cranium movement relative to the cervical spine.
Implications:
- Familiarizing clinicians with AOD mechanisms and imaging interpretation aids diagnosis.
- Prompt diagnosis of AOD is critical for patient management and outcomes.
- Early identification of AOD can improve patient survival and reduce morbidity.
