Introduction: Odontoid fractures correspond to 9-15% of cervical spine fractures. Atlas fracture is rare (3-13%).
Case Presentation: Male with Anderson and D´Alonzo Type II Odontoid fracture with unstable fragment treated with occipitocervical fixation with occipital plate, C2-C3 transfacet screws; Female with type E Jefferson fracture + anterolateral atloaxial dislocation, treated with occipitocervical fixation, C2-C3-C4 transfacet screws.
Discussion: Anderson and D'Alonzo Type II fractures and Jefferson type E fractures are a surgical emergency due to instability and neurological deficit.
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