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Are two strong and short conical fasciculi, whose truncated summits embrace the sides of the odontoid process, and whose bases are fixed in the fossae at the inner side of the condyles of the occipital bone. Their direction is obliquely outwards and slightly upwards. They enter into the composition of the occipito-axoid articulation, strengthen the junction of the head with the vertebral column, and limit the movement of rotation of the atlas on the axis. Other ligamentous fibres pass from the highest portion of the processus dentatus to the anterior margin of the foramen magnum of the occipital bone-constituting the Ligamentum suspensorium dentis.

one on either side of the odontoid process, which connect the atlas to the skull.