Transoral C2 osteotomy for treatment of severe irreducible atlantoaxial dislocation after odontoid fracture: about 3 cases.

Objective: To report the outcomes of transoral C2 osteotomy (or partial odontoidectomy) and posterior fixation, regarding efficacy and safety, in patients with severe irreducible atlantoaxial dislocation (IAAD) following odontoid fracture.

Methods: Transoral C2 osteotomy, soft tissue resection, with or without facet joint release, followed by posterior fixation were performed on 3 patients (2012, 2016, 2023) who were suffering from severe IAAD after an odontoid fracture with spinal cord compression. The radiological and clinical outcomes were then assessed.