Skull base depression

Basilar invagination is a common clinical neurodevelopmental disorder. This disease is a developmental malformation of the skull base bone tissue, Atlas and axis centered on the foramen magnum. The atlas falls into the skull cavity, and the odontoid process of the axis enters the foramen magnum above the normal level, which narrows the foramen magnum and reduces the posterior cranial fossa, thus compressing the medulla oblongata, cerebellum and pulling the nerve roots, resulting in a series of symptoms. At the same time, there may be insufficient blood supply due to compression of the vertebral artery.