CT was used to examine six patients with clinically evident atlantoaxial rotary fixation, two
patients with torticollis, and six normal subjects who had turned their heads to the side as far …

The mechanism of atlantoaxial rotatory fixation was investigated by means of CT scanning.
During the acute stage, there was a common rotatory displacement of the occiput and atlas …

Persistent torticollis in younger patients, particularly after trivial trauma or an upper
respiratory tract infection, suggests a diagnosis of atlantoaxial rotary fixation. The diagnosis …

Study Design. Normal rotation was evaluated in a group of 40 asymptomatic adults.
Objective. To determine the normal rotational limits of C1–C2 in adults and define when a …

Atlanto‐axial rotatory fixation (AARF) is an uncommon condition which is often missed at
presentation because of its rarity and the relative subtlety of plain film X‐ray findings, but …

We report three cases of atlanto-axial rotatory fixation in adults. Early diagnosis was made
by clinical tests showing restricted head rotation in maximal neck flexion and asymmetry of …

Although the anatomy and movements of the atlantoaxial joint are now well documented,
much remains unknown regarding pathological conditions of this area. Infections of varying …

Study Design. Clinical case reports and radiologic study. Objectives. To emphasize the
value of computed tomography (CT) scan under general anesthesia in order to prevent …

In seventeen cases of irreducible atlanto-axial rotatory subluxation (here called fixation), the
striking features were the delay in diagnosis and the persistent clinical and …

The value of computed tomography in the diagnosis of lesions of the musculoskeletal
system is being explored. In a case of simultaneous occipito-atlantal and atlantoaxial …