Anterior approaches to the craniovertebral junction (CVJ) are associated with several complications and preferably be avoided when feasible. The posterolateral approach provides a single-stage solution to pathologies of the CVJ that may otherwise require a separate ventral decompression. [1][2][3] We describe a case of an old malunited type II odontoid fracture with a rigid cervical kyphosis to illustrate the surgical technique of posterolateral approach to the CVJ. We create corridors to the base of the odontoid by drilling along the C1-C2 facets and C2 pedicles bilaterally. This leads to the release of the ventral bony callus and reduces bilateral facet (C1 over C2) spondyloptosis, addressing both factors leading to the rigid and kyphotic CVJ. The patient consented to the procedure and consented to the publication of his image. This approach was reported previously for atlantoaxial dislocation with retroverted dens 1 and for biopsy from the base of the odontoid. 4 The posterolateral approach is akin to the lateral extracavitary approach of the dorsal spine. Bilateral oblique corridors complement each other and allow a focused ventral decompression at the level of the odontoid base. Moreover, the transarticular corridor allows an opportunity for simultaneous correction of the facetal malalignment. Thus, the deformity is corrected from a single approach while avoiding a separate ventral approach. 5,6 Despite the advantages, a potential blind area right in front of the spinal cord can endanger neurological functions from manipulations. Hence, elective division of C2 ganglia, neuromonitoring, and utilization of neuroendoscopes may be considered intraoperatively.
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