Ceramic prostheses used as a columella.
Ceramic stems, their lateral end capped with a modelled ossicle, or ceramic prostheses manufactured with a cap-shaped head were used as a columella from the stapes footplate to the tympanic membrane or a fascia graft in 41 ears operated on during 1982-1985. Six ears had no membrane perforations and no severe disease of the tympanic mucosa. Twelve ears underwent primary operations for cholesteatoma and 23 ears had revision surgery. Good hearing improvement occurred in well-aerated ears while hearing in ears with extensive tympanic disease did not improve after surgery. No tissue reactions to the ceramic prosthesis were observed and no prosthesis was extruded. Ceramic can be regarded as an acceptable alternative to bone for columella grafts used in surgery for chronic middle ear disease when the stapes superstructure is missing.
D001672:Biocompatible Materials; D002516:Ceramics; D002781:Cholesteatoma / Q000601:surgery*; D004427:Ear Diseases / Q000601:surgery*; D006801:Humans; D009998:Ossicular Prosthesis
D001672:Biocompatible Materials; C031323:bio-vitroceramic AP40