Drill

The long-shanked drill with extra-long burrs allows drilling to be done within the nose without scuffing or abrading the surrounding mucosa. It delivers irrigating fluid near the end to stop the burr from heating up. Extra-coarse diamond burrs have been produced to help removal of bone where it is thick, for example, the beak of the frontal recess or the anterior lacrimal crest. Using these burrs, it is possible to expose the orbital periosteum or dura without tearing them (this is helpful in endonasal tumor surgery) (Fig. 10.28). A finer di

Optic Nerve Dura And Orbit Periosteum

Fig. 10.27 The shaver sucking and about to shear off a polyp. Fig. 10.28 An irrigated coarse diamond burr removing fibrous dysplastic bone at the orbital apex.

Fig. 10.27 The shaver sucking and about to shear off a polyp. Fig. 10.28 An irrigated coarse diamond burr removing fibrous dysplastic bone at the orbital apex.

Orbital Apex

amond burr is indicated for work over the optic nerve, but otherwise a coarse diamond burr is the one of choice.

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