Revision 4 for 'Transsphenoidal basilar skull fracture'

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Transsphenoidal basilar skull fracture

Transsphenoidal basilar skull fractures are a particularly serious type of basilar skull fracture usually occurring in the setting of severe traumatic brain injury and with potential for serious complications including damaging the internal carotid arteries and optic nerves as well as high incidence of dural tear with CSF leak. 

Pathophysiology

Due to the particulars of the anatomy of the base of skull, fractures that involve the sphenoid sinus tend to extend along a number of predefined pathways 1,2:

  • anterior transverse
    • coronal fracture plane extending from the squamous temporal bone
    • through the base of the anterior clinoid processes anterior to the pituitary fossa
    • may extend inferiorly to involve the pterygoid processes
  • lateral frontal diagonal
  • posterior transverse
  • mastoid diagonal

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