Atlantoaxial instability (AAI) is a significant neurosurgical condition most frequently identified in toy breed dogs, stemming from congenital malformations or trauma-induced ligamentous weaknesses ...

A mother suffers from a rare disorder that could 'internally decapitate' her at any moment. Rachel Pighills has atlantoaxial instability, which is defined by excessive movement between the first and ...

Atlantoaxial instability (AAI) is defined as excessive movement at the junction between the spine's first two vertebrae. It is unclear how common it is. Neurological symptoms, such as dizziness, ...