Atlanto-Axial Joint Flashcards Preview

Spinal Final Exam > Atlanto-Axial Joint > Flashcards

Flashcards in Atlanto-Axial Joint Deck (6)
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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– a radiographic 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

A range of 2-3mm or about 2.5 mm in adults

5
Q

What are the degrees of movement facilitated at the atlanto-axial joint?

A

About 20 degrees Flexion-Extension
40 degrees one side Axial Rotation
5 degrees Lateral Bending

6
Q

The occiput-C1-C2 joint complex accounts for what percent of all cervical axial rotation?

A

About 60%

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