Microvasculature of the Middle Fossa Floor as Potential Landmarks for Middle Fossa Approaches: An Anatomical Study

Background: Microvasculature of the structures of the middle ear plays an important role in the preservation of their optimum functions. Advancement in the endoscopic equipment allowed better visualization of these tiny vessels. Visualization of these vessels during middle fossa approaches not only help in protection of the structures supplied by these vessels, but also can be used as landmarks to structures viewable in the middle fossa floor, namely, the arcuate eminence (AE), great superficial petrosal nerve (GSPN), geniculate ganglion (GG), and cochlea (Co).