Explanation • The movements at the atlanto-axial joint allow | NEET PG/NEXT (MCQs)

Explanation

• The movements at the atlanto-axial joint allow a person to look left and right
• The atlanto-axial joints include 3 synovial joints.
• Median atlanto-axial joint: The central pivot joint between the dens of axis ad a ring formed by the anterior arch and transverse atlantal ligament.
• Lateral atlanto-axial joints: Plain synovial joints between lateral masses of atlas and upper facets of the body of axis.
• Movements: Movements at the atlanto-axial joint almost exclusively is rotation around the axis, which help side-to-side rotation of the head. The normal range of atlanto-axial rotation is about 40 degree.