Mastoid surgery is performed by removing the
hollow bone behind the ear. The procedure begins by making an incision and retracting the ear forward to expose the mastoid bone surface. The honeycomb partitions of the mastoid bone are then drilled away down to where it connects to the middle ear. There are important structures that are preserved during the process including: Semicircular canals which are responsible for inner ear balance. The bone that separates the brain from the middle ear and mastoid The sigmoid sinus which is a large blood vessel which connects to the jugular vein in the neck. Chorda tympani nerve which supplies sense of taste to the tongue. Facial nerve which is responsible for facial movements. Here is a live surgery of a mastoidectomy
being performed. Water and suction is used to keep the surgical site clean during drilling as well as to prevent heat buildup that may damage tissues. At times a type of ear cyst called a cholesteatoma is the reason that the surgery is performed In this actual surgery of cholesteatoma removal, one can appreciate more bleeding due to inflammation caused by these skin cysts. In rare situations the wall separating the
ear canal and mastoid cavity is removed to eradicate ear disease.