Summary of surgical methods and outcomes in 12 patients with occipitalization of the atlas.
| Case No. | Surgical Method | AAS | Outcome | |
|---|---|---|---|---|
| Preop. | Postop. | |||
| 1 | Occ-C3 PSF and C1 laminectomy | subluxated (mobile) | reduced | improvement |
| 2 | Occ-C4 PSF, C1 laminectomy, and C4-6 laminoplasty | subluxated (irreducible) | not reduced | improvement |
| 3 | Occ-C3 PSF and C1 laminectomy | subluxated (irreducible) | reduced | improvement |
| 4 | Occ-C3 PSF, C1 laminectomy, and C4-6 laminoplasty | subluxated (mobile) | reduced | improvement |
| 5 | Occ-C4 PSF and C1 laminectomy | subluxated (irreducible) | not reduced | improvement |
| 6 | Occ-C7 PSF and C1 laminectomy | subluxated (irreducible) | not reduced | improvement |
| 7 | foramen magnum decompression | improvement | ||
| 8 | Occ-C4 PSF and C1 laminectomy | subluxated (irreducible) | reduced | improvement |
| 9 | Occ-C5 PSF and C1 laminectomy | subluxated (irreducible) | reduced | improvement |
| 10 | Occ-C7 PSF and C1 laminectomy | subluxated (irreducible) | reduced | improvement |
| 11 | Occ-T2 PSF | improvement | ||
| 12 | Occ-T3 PSF | improvement | ||
* Occ = Occiput, PSF = posterior spinal fusion