The Chiari I malformation is a congenital abnormality characterised by downward displacement of the cerebellar tonsils through the foramen magnum into the cervical spine. It presents clinically most ...

Achondroplasia, the most common skeletal dysplasia, and Chiari II malformation, a congenital hindbrain abnormality, can both lead to craniocervical compression and hydrocephalus, resulting in severe ...