Dystopic Os Odontoideum With Chronic Posterior Atlantoaxial Subluxation: A Case Report.

Cureus

Diagnostic and Interventional Radiology Department, Faculty of Medicine, Medical Research Institute, University of Alexandria, Alexandria, EGY.

Published: October 2024

AI Article Synopsis

  • Os odontoideum is a rare anomaly in the cervical spine that can lead to instability at the atlantoaxial joint.
  • Depending on its type, this instability can cause anterior subluxation (common) or posterior subluxation (very rare).
  • Posterior subluxation is especially dangerous as it can result in myelopathy and potentially lead to serious outcomes like quadriplegia or death.

Article Abstract

Os odontoideum is considered a rare cervical spine anomaly. Depending on its type, it may or may not result in atlantoaxial instability, which can lead to anterior subluxation (the most common type) or posterior subluxation, with the latter being extremely rare. Posterior atlantoaxial subluxation is particularly dangerous, as it can progressively lead to myelopathy through various mechanisms and may ultimately result in quadriplegia or even death.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11525844PMC
http://dx.doi.org/10.7759/cureus.72749DOI Listing

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