title: Canal-down tympanoplasty; one-stage tympanoplasty with mastoid obliteration, for non-cholesteatomatous chronic otitis media associated with osteitis.
abstract: We operated on 54 ears using the canal-down procedure consisting of one-stage tympanoplasty with mastoid obliteration for non-cholesteatoma otitis media with lesions in the ossicular chain and compared the results with those of patients treated with the canal-up procedure. Complications, such as mastoid problems, which have been observed in surgery with the simple canal-down procedure, were not observed in operations combining mastoid obliteration. The success rate for our procedure as evaluated by postoperative hearing levels, according to the standards established by the Japan Society of Clinical Otology, Committee on Nomenclature 1987, was 77.4% with tympanoplasty (ceramic P type) with reconstruction of the ossicular chain; 70.6% with reconstructive surgery using T type ceramic; and 50.0% with reconstructive surgery using the patient's own bone. Overall, the success rate was 72.2%. Our procedure seems to be superior to the canal-up procedure with respect to improvement of hearing levels in the treatment of patients with chronic otitis media associated with lesions in the ossicular chain.
authors.affiliation: Department of Otorhinolaryngology, School of Medicine, Tokai University, Kanagawa, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Shinkawa
authors.forename: M
authors.initials: M
authors.lastname: Sakai
authors.forename: Y
authors.initials: Y
authors.lastname: Tamura
authors.forename: H
authors.initials: H
authors.lastname: Takahashi
authors.forename: K
authors.initials: K
authors.lastname: Ishida
mesh_terms: D018424:Cholesteatoma, Middle Ear / Q000601:surgery*; D002908:Chronic Disease; D005500:Follow-Up Studies; D006801:Humans; D008416:Mastoid; D010000:Osteitis / Q000601:surgery*; D010033:Otitis Media / Q000601:surgery*; D014433:Tympanoplasty / Q000379:methods*