| RA | rheumatoid arthritis |
| CS | cranial settling |
| ASS | atlantoaxial subluxation |
| AAI | atlantoaxial instability |
| mJOA | modified Japanese orthopaedic association scale |
| SAS | subaxial subluxation |
| AADI | anterior atlantodental Interval |
| PADI | posterior atlantodental interval |
| VT | vertical translocation |
| CT | computer tomography |
| MRI | magnetic resonance tomography |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.