Abstract
Background: Adult craniocervical junction malformations have been described as Chiari malformation (CM) and Basilar invagination (BI). Recently, angular craniometric studies have identified differences among subtypes of malformations and reveled new relationships between skull and spine. Objective: The scope of this study is to summarize the knowledge related to craniometric relationship in pathophysiology of these diseases. Results: In CM, angular craniometric measures are not different from normal controls. In BI type I and II there is an increased craniocervical Kyphosis associated to cervical spine lordosis. Chamberlain’s line violation evaluation reveals that there is a downward angulation of the skull towards the upper cervical spine in BI. Conclusion: BI should be considered a craniometrical kyphosis rather than a prolapse of the cervical spine to the skull base.
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