Gamuts

Basilar invagination

Basilar invagination is invagination (infolding) of the base of the skull that occurs when the top of the C2 vertebra migrates upward. It can cause narrowing of the foramen magnum (the opening in the skull where the spinal cord passes through to the brain). [Source: Wikipedia ]

May Cause
Congenital craniovertebral junction abnormality
Fourth ventricle outlet obstruction
Hydrocephalus
May Be Caused by
 Common
Chiari II malformation
Congenital craniovertebral junction anomaly
Osteogenesis imperfecta
Osteomalacia
Paget disease of bone
Rickets
 Uncommon
Achondroplasia
Ankylosing spondylitis
Aqueduct stenosis
Atlantoaxial dislocation
Chronic hydrocephalus
Cleidocranial dysostosis
Collet-Sicard syndrome
Crouzon syndrome
Familial basilar invagination
Familial primary basilar impression
Fibrous dysplasia
Hajdu-Cheney syndrome
Hyperparathyroidism
Hypoparathyroidism
Hypophosphatasia
Klippel-Feil syndrome
Langerhans cell histiocytosis
Lowe syndrome
Metaphyseal chondrodysplasia Jansen type
Mucopolysaccharidosis
Occipital craniotomy in a child
Osteomyelitis
Osteopetrosis
Osteoporosis
Psoriatic arthritis
Pyknodysostosis
Rheumatoid arthritis
Schwartz-Jampel syndrome
Sjögren-Larsson syndrome
Syphilis
Trauma
Trisomy 21
Tuberculosis
Unfused C1 posterior arch