How are type IIA C2 fractures defined?

Updated: Sep 28, 2020
  • Author: Igor Boyarsky, DO, FACEP, FAAEM; Chief Editor: Jeffrey A Goldstein, MD  more...
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Type IIA fractures are defined as follows:

  • Type IIA fractures (6%) demonstrate no anterior displacement, but there is severe angulation
  • The mechanism for this injury is flexion with concomitant distraction. The resultant injury pattern is bilateral pedicle fractures with C2/C3 disk disruption and some degree of insult to the PLL; this is an unstable fracture
  • Radiographs taken while the patient is in cervical traction demonstrate an increase in the C2/C3 posterior disk space

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