Abstract
Otosclerosis causes the fixation of the stapes and conductive hearing loss, usually corrected with the use of hearing aids or through stapedotomy and the replacement of the involved stapes with a prosthesis. Titanium has been the most recently used material of choice in stapedotomy prostheses. Only two prostheses are commercially available in Brazil. There are no reports in the literature on the Fisch-type Storz titanium stapes piston prosthesis. ObjectiveThis retrospective study aims to look into the auditory outcomes of patients submitted to stapedotomy and titanium stapes piston prosthesis implantation. MethodThe criteria described by the American Academy of Otolaryngology were used to compare pre and postoperative air-bone gaps seen in audiometry tests. ResultsThe mean low-frequency postoperative air-bone gap was 12.9 dB; the mean high-frequency air-bone gap was 5.2 dB (mean 9.1 dB); median gap was 8.8 dB, with a minimum of 1.3 dB and a maximum of 21.6 dB; standard deviation was 5.7 dB, and p < 0.001. Twenty-five (75.8%) patients had air-bone gaps of 10 dB and under; 32 (96.9%) patients had gaps of 20 dB and under; and all patients had gaps of 30 dB and under. ConclusionThe Fisch-type titanium stapes piston prosthesis presented outcomes consistent with the literature and can be used safely in stapedotomy procedures.
Highlights
Otosclerosis or otospongiosis is a hereditary disease characterized by degeneration of the otic capsule, focal bone neoformation, and increased local vascularization
This study is a retrospective analysis of the audiometric findings of patients submitted to stapedotomy for otosclerosis equipped with the Fisch Titanium Piston prosthesis made in Tübingen, Germany, listed in the manufacturer’s catalog under number 277511
The lack of published data on the results provided by the Fisch Titanium Piston prosthesis and the increase in its use in Brazil called for a specific study
Summary
Otosclerosis or otospongiosis is a hereditary disease characterized by degeneration of the otic capsule, focal bone neoformation, and increased local vascularization. The main clinical symptom described by patients is hearing loss, followed by tinnitus. This disease affects between 0,5% and 1,0% of the world’s population, and presents bilateral involvement in 70% to 85% of the cases. Prevalence rates are higher among females and subjects in their thirties and forties[1]. Higher rates are seen among Caucasians, with up to 10% of such population presenting some degree of otosclerosis[2]
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