Traynelis classification of atlanto-occipital dislocations
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At the time the article was created Craig Hacking had no recorded disclosures.View Craig Hacking's current disclosures
At the time the article was last revised Francis Deng had no recorded disclosures.View Francis Deng's current disclosures
- type I: anterior displacement
- type II: longitudinal distraction (superior-inferior displacement)
- type III: posterior displacement
A limitation of this classification system is that rotatory or coronal malalignment are not taken into consideration.
Treatment and prognosis
Type I and III injuries are treated with longitudinal traction to reduce the dislocation followed by surgical fixation. Non-operative management including collar or halo immobilization is used for certain patients but has a high rate of failure. Persistent traction is contraindicated due to the increased rate of neurological complications.
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