Inverted frontal bone and pericraniogaleal flap for frontal sinus hypertrophy.

A 31-year-old man with frontal sinus hypertrophy was treated with an inverted frontal bone and pericraniogaleal flap. Through a coronal incision and anterior supragaleal dissection, a pericraniogaleal flap was raised down to the supraorbital rim, and the frontal bone was exposed. The protruded anterior wall of the frontal sinus was removed with a drill. The excised piece of bone was inverted and replaced and fixed with microplates. The depressed surface of the inverted bone was made full with a folded pericraniogaleal flap. We think that an inversion of the anterior wall of the hypertrophied frontal sinus and topping with a folded pericraniogaleal flap are an alternative measure to treat frontal sinus hypertrophy.