The skull base forms the floor of the cranial cavity and separates the brain from other facial structures. This anatomic region is complex,working knowledge of the normal and...
The skull base forms the floor of the cranial cavity and separates the brain from other facial structures. This anatomic region is complex,working knowledge of the normal and variant anatomy of the skull base is essential for effective surgical treatment of disease in this area./nThe frontal bone houses the supraorbital foramina, which, along with the frontal sinuses, form 2 important surgical landmarks during approaches involving the anterior skull base./nThe ethmoid bone forms the central part of the floor, which is the deepest area of the anterior cranial fossa. In the center of this region is the cribriform plate, through which the olfactory tracts pass. The fovea ethmoidalis, or the roof of the ethmoid cavity, continues laterally from the cribriform plate. The cribriform plate may be more than 1 cm lower than the roof of the ethmoid cavity .
During transethmoidal approaches to the anterior skull base, this relationship is extremely important to remember
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