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, and telescoping (superior-inferior gliding)
What is the ADI?
the 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 2.5mm 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, and 5 degrees of lateral bending
The occiput-C1-C2 joint complex accounts for what percent of all cervical axial rotation?
about 60%
