Posterior C1-C2 fusion with polyaxial screw and rod fixation for atlantoaxial fusion described by Atul Goel and Laheri, and subsequently modified by Jürgen Harms.

see Harms Technique

(C1 Lateral Mass Screws and C2 Pedicle/Pars Screws)

Alternative to transarticular screw fixation.

More forgiving in cases with an aberrant vertebral artery course.