Skip to Content


Pronunciation: plat'i-ba'se-a

Definition: A developmental anomaly of the cranium or an acquired softening of the cranial bones so that the floor of the posterior cranial fossa bulges upward in the region about the foramen magnum.

Synonym(s): basilar invagination

[platy- + G. basis, ground]

Disclaimer: This site is designed to offer information for general educational purposes only. The health information furnished on this site and the interactive responses are not intended to be professional advice and are not intended to replace personal consultation with a qualified physician, pharmacist, or other healthcare professional. You must always seek the advice of a professional for questions related to a disease, disease symptoms, and appropriate therapeutic treatments.
© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.