Atlanto-axial joint Flashcards
1
Q
What is the function of the transverse atlantal ligament
A
it is the primary stabilizer of the atlanto-axial joint restricting the distance of C2 from the anterior arch of C1
2
Q
What movements are facilitated at the median atlanto-axial joint
A
Flexion-extension
rotation
telescoping (superior-inferior gliding)
3
Q
What is the ADI
A
Atlanto dental interspace
The distance between the surfaces of the anterior bursa of the median atlanto-axial joint
4
Q
What is the ADI of children compared with that of adults
A
about 4.5mm in children
2-3 mm in adults
5
Q
What motion is coupled with flexion to permit more the 5 degrees of motion
A
axial rotation
6
Q
The occiput C1-C2 joint complex accounts for what percent of all cervical axial rotation
A
about 60%
