atlantoaxial joint

atlantoaxial joint The joint between the first (atlas) and second (axis) vertebrae of the neck beneath the skull. The axis features a bony prominence called the odontoid process, about which the atlas rotates. The atlantoaxial joint is a pivot type of joint. It allows the head to turn from side to side. The atlantoaxial joint is supported and strengthened by the capsular, anterior, and posterior atlantoaxial and by the transverse ligaments. Also known as atloaxoid joint.