title: Stapedotomy: does prosthesis diameter affect outcome?
abstract: Two hundred ears with otosclerosis have been operated upon using a 0.4-mm diameter Teflon platinum piston in 100 ears and a 0.6-mm diameter Teflon piston in the other 100 ears. The postoperative air-bone gap, calculated as the difference between the postoperative air and bone conduction levels, was smaller in the 0.6 mm group for all frequencies except at 2000 Hz, the differences were statistically insignificant except at 4000 Hz. The mean postoperative air-bone gap was 8.6 dB and 7.4 dB for the 0.4 and 0.6 mm groups, respectively, which is statistically insignificant. We found no postoperative loss of bone conduction exceeding 15 dB, there was a deterioration of more than 10 dB in three ears, one in the 0.4 mm group and two in the 0.6 mm group. According to our results, we conclude that the 0.4 mm and the 0.6 mm Teflon prostheses produce the same hearing improvement in stapes surgery for otosclerosis.
authors.affiliation: Department of Otorhinolaryngology, Faculty of Medicine, Mansoura University, Egypt. y.shabana@mailexcite.com
authors.forename: Y K
authors.initials: YK
authors.lastname: Shabana
authors.forename: M R
authors.initials: MR
authors.lastname: Ghonim
authors.forename: C B
authors.initials: CB
authors.lastname: Pedersen
mesh_terms: D000328:Adult; D000368:Aged; D001844:Bone Conduction / Q000502:physiology; D005260:Female; D005500:Follow-Up Studies; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis; D006801:Humans; D008297:Male; D008875:Middle Aged; D019933:Ossicular Replacement; D011138:Polytetrafluoroethylene; D011182:Postoperative Care; D011300:Preoperative Care; D019919:Prosthesis Implantation; D012720:Severity of Illness Index; D013069:Speech Reception Threshold Test; D013201:Stapes Surgery
chemical_list: D011138:Polytetrafluoroethylene