Q8 Atlantoaxial articulations

Question 1

State the position of the articular surfaces participating in the Lateral Atlantoaxial joints

Answer 1

Between the inferior aspects on the lateral masses of the atlas (C1) and the superior articular processes of the axis (C2).

Question 2

State the position of the articular surfaces participating in the Median/midline Atlantoaxial joints

Answer 2

Between the front of the dens and the inner aspect of the anterior arch of the atlas (C1); and the posterior aspect of the dens and the transverse ligament of the Atlas (C1)

Question 3

List 3 ligaments or membranes associated with this joint

Answer 3

Transverse Ligament of the atlas
Cruciform Ligament of the Atlas
Tectorial membrane
Ligamentum Nuchae
Ligamentun Flavum
Alar and Apical ligament of the dens

Question 4

Name the movement that occurs at this joint

Answer 4

Rotation of the head on the neck (Cervical spine)