Atlantoaxial instability (AAI)

see Atlanto-axial subluxation.

Central Atlantoaxial Instability: A New Clinical Entity? 1).

1)
Smith JS. Central Atlantoaxial Instability: A New Clinical Entity? Neurospine. 2019 Jun;16(2):212-213. doi: 10.14245/ns.19edi.005. Epub 2019 Jun 30. PubMed PMID: 31261456.