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Long-term observations on ceramic ossicular replacement prosthesis (CORP). 1988

E Yamamoto
Department of Otolaryngology, Kobe City General Hospital, Japan.

Long-term observations on the ceramic ossicular replacement prosthesis (CORP) were performed. Extrusion rates were 8.3% for CORP-P and 5.2% for CORP-T, with most extrusions occurring within 2 years. Hearing results were satisfactory. Air-bone gaps at 1 year were within 10 dB in 44.8% with CORP-P and 31.2% with CORP-T. At 3 to 5 years, air-bone gaps were within 10 dB in 42.2% and 33.3%, respectively. It was found that the short-term results were maintained even for the long period. Unsatisfactory hearing gains were caused mainly by the displacement or extrusion of CORP which could be prevented by fixation with the cartilage plate, deepening of the base of CORP-P, fixing of the base of CORP-T with the fascia, and additional fixing with the malleus handle and chorda tympani nerve.

UI MeSH Term Description Entries
D009998 Ossicular Prosthesis An implant used to replace one or more of the ear ossicles. They are usually made of plastic, Gelfoam, ceramic, or stainless steel. Implant, Middle Ear,Middle Ear Implant,Ossicular Replacement Prosthesis,PORP,TORP,Implant, Ossicular Replacement,Ossicular Replacement Implant,Ossicular Replacement Prostheses,Prostheses, Ossicular Replacement,Prosthesis, Ossicular Replacement,Replacement Implant, Ossicular,Replacement Prostheses, Ossicular,Replacement Prosthesis, Ossicular,Ear Implant, Middle,Ear Implants, Middle,Implants, Middle Ear,Implants, Ossicular Replacement,Middle Ear Implants,Ossicular Prostheses,Ossicular Replacement Implants,Ossicular Replacement Prosthese,Prostheses, Ossicular,Prosthesis, Ossicular,Replacement Implants, Ossicular
D002516 Ceramics Products made by baking or firing nonmetallic minerals (clay and similar materials). In making dental restorations or parts of restorations the material is fused porcelain. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed & Boucher's Clinical Dental Terminology, 4th ed) Ceramic
D005500 Follow-Up Studies Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease. Followup Studies,Follow Up Studies,Follow-Up Study,Followup Study,Studies, Follow-Up,Studies, Followup,Study, Follow-Up,Study, Followup
D005549 Foreign-Body Reaction Chronic inflammation and granuloma formation around irritating foreign bodies. Foreign Body Reaction,Reaction, Foreign-Body
D006309 Hearing The ability or act of sensing and transducing ACOUSTIC STIMULATION to the CENTRAL NERVOUS SYSTEM. It is also called audition. Audition
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor

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