6] The symptoms of nuchal pain, and lancinating sensation with loss of power of upper and lower limb muscles indicate atlantoaxial joint
disease with bursitis and subluxation of joint due to RA.
Rotation in the cervical spine is mainly based on the atlantoaxial joint
, wherein the transverse and alar ligaments provide ligamentous stability.
It is generally accepted that there is a coupling pattern at the atlantoaxial joint
As in rheumatoid arthritis, atlantoaxial joint
subluxation, atlantooccipital subluxation and upward subluxation of the axis may occur in AS as a consequence of instability resulting from the inflammatory process.
Atlantoaxial subluxation involves a widened atlantoaxial joint
that can be stable or unstable with movement.
The TAL is the most important ligament, stabilizing the atlantoaxial joint
against translational forces.
Rare in adults, several conditions associated with abnormalities in the atlantoaxial joint
or ligament laxity course with a higher incidence of this entity, such as rheumatoid arthritis, Sfndrome de Down, Sfndrome de Marfan, Sfndrome de Morquio e Sfndrome de Grisel (1, 2).
Severe muscle spasm of the neck secondary to osteomyelitis of the atlantoaxial joint
Rotating and tilting the neck stretches the extracranial vertebral arteries and produces a shearing force on the portion of the arteries at the atlantoaxial joint
that may produce intimal tearing, dissection or thrombus formation.
Fractures of the first and second cervical vertebrae are particularly significant because nearly 40% of the motion of the spine occurs at the atlantoaxial joint
, where the first and second vertebrae articulate.
Aim of the present study was to evaluate the metrical details of first and second cervical vertebrae to correct the instability of atlantoaxial joint
, and to analyze the morphological features to understand the ergonomics of the craniovertebral joints.
The primary stabilizer of the atlantoaxial joint
is transverse, and the secondary stabilizers are the alar ligaments.