Deep temporal fascial-periosteal flap for canal wall down mastoidectomy.

It is very important to make a safe, dry, trouble-free ear for the canal wall down mastoidectomy. Although fascia graft is the most common material used for the repair of the perforated tympanic membrane, it is usually too small to cover the whole mastoid cavity in canal wall down mastoidectomy. The presence of exposed bone delays the epithelialization and results in prolonged otorrhea. We present a new simple technique that uses a postauricular, inferiorly based pedicled flap. Although our deep temporalis fascial-periosteal flap is not bulky, it is large enough to obliterate a sclerotic mastoid cavity without the need for additional flaps. It shrinks much less than a muscular flap during the healing period. In addition to reducing the cavity volume, this flap promotes the epithelialization over the bone and the shortening of the healing time. Although only a small number of patients were included in this study, coverage of a canal wall down mastoid cavity by a deep temporalis fascial-periosteal flap is expected to be a reliable and effective technique that results in a dry, trouble-free mastoid cavity.