Atlanto-Axial Joint Flashcards
What is the function of the transverse atlantal ligament?
It is the primary stabilizer of the atlanto-axial joint restricting the distance of C2 from the anterior arch of C1
What movements are facilitated at the median atlanto-axial joint?
Flexion-Extension
Rotation
Telescoping (superior-inferior gliding)
What is the ADI?
Atlanto-dental interspace– a radiographic distance between the surfaces of the anterior bursa of the median atlanto-axial joint
What is the ADI of children compared with that of adults?
About 4.5mm in children
A range of 2-3mm or about 2.5 mm in adults
What are the degrees of movement facilitated at the atlanto-axial joint?
About 20 degrees Flexion-Extension
40 degrees one side Axial Rotation
5 degrees Lateral Bending
The occiput-C1-C2 joint complex accounts for what percent of all cervical axial rotation?
About 60%
