Purpose: To review our experience with surgical management of basilar invagination causing foramen magnum compression, focusing on selection of the surgical approach. Methods: Twelve consecutive patients underwent posterior foramen magnum decompression with occipitocervical fixation and fusion for treatment of basilar invagination causing brain stem compression and instability. Gentle traction ...

We examined 50 computed tomographic (CT) scans that included sections through the base of the skull at a wide variety of angles. Each of these examinations had an accompanying localizing radiograph so that the angle at which the scan had been obtained could be ascertained . The scans were randomly arranged and rated as to how well 11 structures in the skull base were visualized: (1) foramen mag...

Dissecting intracranial vertebral artery aneurysm is a rare entity in clinical practice. Involvement of posterior circulation at the level of the foramen magnum even rarer.Vertebral artery aneurysm is usually presented with headache, neck pain and vertigo with vomiting. Here we are describing a rare case with uncommon presentation.

In the late nineteenth century William James pieced together a theory of self that is remarkably modern, some might say 'post-modern.' In Chapter X of his magnum opus, The Principles of Psychology (1890), entitled "The Consciousness of Self," James discusses the manifold nature of the self treating it in its native complexity. Among other things, he proposes a notion of identity and experience ...

Lesions of the petroclival area have long been considered by neurosurgeons as unreachable,I,2 and until recently, patients afflicted with meningiomas in this region have carried poor prognoses, usually with a lethal outcome.1,39 Refined approaches and advances in microsurgery techniques, along with the aid of intraoperative monitoring, have encouraged neurosurgeons to reevaluate the ef1icacy of...

The entity of Chiari formation was described by Hans Chiari in 1891 [1,2]. Since then the subject has been evaluated elaborately by a number of authors. However, it may only be correct to state that confusion in the understanding of pathogenesis and the nature of anomaly, significance of associated  abnormal soft tissue and bone anomalies and more importa...