Controversies in the Surgical Management of Chiari Malformations: What Is the Surgical Procedure of Choice? To Open Dura or Not to Open Dura?

摘要

Chiari I malformation is considered a form of cerebellar tonsillar ectopia and, at least in the context of this discussion, represents a congenital anomaly, unassociated with other congenital brain malformations. The vermis, fourth ventricle, medulla, and rest of the brain are normal. The cerebellar tonsils are displaced inferiorly through the foramen magnum.