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Related Experiment Videos

Understanding the os odontoideum.

E Forlin1, D Herscovici, J R Bowen

  • 1Department of Orthopaedics, Alfred I. duPont Institute, Wilmington, Delaware.

Orthopaedic Review
|December 1, 1992
PubMed
Summary
This summary is machine-generated.

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Os odontoideum, a spinal condition, can cause C1-2 instability. Posterior spinal fusion is recommended for unstable cases, especially in patients with Down syndrome, to prevent neurological damage.

Area of Science:

  • Orthopedics
  • Neurosurgery
  • Genetics

Background:

  • Os odontoideum is a rare congenital anomaly.
  • It can lead to atlantoaxial instability (C1-2 instability).
  • Patients with Down syndrome have a higher prevalence of os odontoideum.

Purpose of the Study:

  • To review cases of os odontoideum with C1-2 instability.
  • To evaluate the efficacy of posterior spinal fusion.
  • To highlight the importance of early diagnosis and management.

Main Methods:

  • Retrospective review of five patients with os odontoideum and C1-2 instability.
  • Analysis of surgical outcomes following posterior spinal fusion.
  • Literature review on os odontoideum and atlantoaxial instability.

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Main Results:

  • Four patients had Down syndrome; two were symptomatic.
  • Posterior spinal fusion was successful in most patients with Down syndrome.
  • One patient with preoperative myelopathy did not improve post-surgery.

Conclusions:

  • Os odontoideum requires close monitoring, particularly for instability.
  • Posterior spinal fusion is a recommended treatment for unstable os odontoideum.
  • Understanding pathoanatomy is crucial for effective patient management.