Abstract
The feature and the procedure of canal wall down tympanoplasty were presented.
The controversy over canal wall down tympanoplasty (CWD) or canal wall up tympanoplasty (CWU) is still far from resolved. The advantage of CWD is the complete elimination of recurrent or residual cholesteatoma. However the post operative epithelization is slow and complete in one to two month.
The surgical principle of CWD technique is adequate exteriorization of the cavity. It implies shaping the cavity as an inverted truncated cone. The bottom of the cavity includes the grafted part of the mesotympanum.
The lowering of facial ridge over mastoid segment of fallopian canal and the extended canalplasty with removal of anteroinferior overhang of tympanic bone is recommended.
As the final stage of the operation, the adequate meatoplasty is performed.
