Atlantoaxial rotatory fixation (AARF) and subluxation are conditions that affect ... A study introduced a new subtype known as type IIIa AARF, which is characterized by specific imaging features ...

1. Schwarze M, Hemmer S, Akbar M: Atraumatic atlantoaxial subluxation—Grisel syndrome. Dtsch Arztebl Int 2020; 117: 773 VOLLTEXT 2. Ruf M, Meyer C, Drumm J, Pitzen T: Atlantoaxial rotatory ...