Atlantoaxial joint

Definition

The atlantoaxial joint is a complex of joints located between the first and second cervical vertebrae (the atlas and axis) that allows for the rotation of the head. It is a pivotal type of synovial joint, characterized by its ability to support the head's rotation from side to side.

Related terms

Synovial Joint: A type of joint that is surrounded by a fluid-filled capsule which allows considerable movement between adjoining bones.

Cervical Vertebrae: The seven vertebrae in the neck region that make up the upper part of the spinal column, providing support and mobility to the skull.

Axis (C2 Vertebra): The second cervical vertebra upon which the first cervical vertebra (atlas) rotates, enabling head rotation