Understanding the os odontoideum.

  title={Understanding the os odontoideum.},
  author={E Forlin and Dan Herscovici and James Richard Bowen},
  journal={Orthopaedic review},
  volume={21 12},
Five cases of os odontoideum and associated instability of C1-2 involving patients who underwent a posterior spinal fusion are reviewed, along with the literature. Four of the patients had Down's syndrome, and two of them were symptomatic at the time of presentation. In the two asymptomatic patients, the os odontoideum was an incidental finding on routine roentgenographic survey. The fifth patient presented with trauma and neck pain. The operation was successful in all of the patients with Down… CONTINUE READING