Brow bone reduction is useful for both men and women who have frontal sinus development that creates an unaesthetic appearance. It is far more commonly done in men whether it be for reduction of very prominent brow bone protrusions or as part of an overall facial feminization surgery for male to female transgender patients.
In most of these types of brow bone reductions a significant change is needed and this requires an osteoplastic setback technique. This is where the complete outer table of bone over the frontal sinus air cavity is removed, reshaped and put back in a more recessed position.
But brow bone reduction can also be done by a burring technique albeit for a more limited result. This is where a hand piece and rotary burr are used to shave down the bone as much as possible but without actually going through the bone into the sinus. The amount of reduction possible is controlled by the thickness of the outer table of bone overlying the sinus. This is relevant over the inner half of the brow bones as this is where the frontal sinus lies. Over the outer half or tail of the brow bones one can burr away as it is solid bone.
Brow brow reduction by burring has the advantage that it can be done through more limited access. An incisional approach such as a pretrichial or hairline browlift provides good linear access for the instrumentation to reach the brow bones from side to side. It also allows adequate visualization of the supraorbital nerves so they are not injured during the bone reduction.
Brow bone reduction by burring works best in those men that just want a little taken off the brow bones or for women who have developed a small brow bone prominence and want it reduced.
Dr. Barry Eppley