Alanto-axial versus occipito-atlanto-axial fusion techniques

Atlanto-axial fusion techniques:

Rupture of the Lig. transversum atlantis, atlas fracture, odontoid fracture, kyphosis of the cervical spine, axis fracture
Anterior plate stabilization

Anterior transarticular screw

Posterior transarticular screw

Posterior atlanto-axial screw fixation plates



Ocipito-atlanto-axial fusion techniques:

Indication: cranio-cervical dislocation, alar ligament rupture

mostly used: screw-rod system
In cranio-cervical instability the method of choice is the dorsal fixation with screws, rods and plate systems.