ISSN: 2149-2247 | E-ISSN: 2149-2549

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Erciyes Medical Journal Does The Diameter of The Prosthesis Affect The Outcome of Stapedotomy? [Erciyes Med J]
Erciyes Med J. Ahead of Print: EMJ-82598 | DOI: 10.14744/etd.2019.19199

Does The Diameter of The Prosthesis Affect The Outcome of Stapedotomy?

Mehmet Ilhan Şahin, Deniz Avcı, Furkan Şan, Ibrahim Ketenci, Yaşar Ünlü
Department of Otolaryngology, Erciyes University Faculty of Medicine, Kayseri, Turkey

Objective: To compare the outcomes of the stapedotomies performed using Teflon prostheses with 0.4 mm and 0.6 mm diameters.
Materials and Methods: Pre- and postoperative audiograms of 52 participants, who had undergone stapedotomy, were evaluated retrospectively. Participants were divided into two groups according to the diameter of the prosthesis used for their surgery: Group 1 (0.4 mm) and Group 2 (0.6 mm). Air conduction (AC) pure tone thresholds at 250, 500, 1k, 2k, 4k and 6k Hz, and air-bone gaps (ABG) at 500, 1k, 2k, and 4k Hz, as well as pure tone averages (PTA), were compared within and between groups.
Results: The hearing gain, in terms of AC thresholds and ABGs, were statistically significant within both groups for each frequency (p<0.05). Pre- and post-operative PTAs and ABGs were similar between the groups (p>0.05). Whereas the preoperative AC thresholds were similar between the groups at all frequencies, postoperative AC thresholds of 0.6 mm group were better than 0.4 mm group at 2000 Hz (p<0.05). However, postoperative AC thresholds were similar between the groups at all frequencies other than 2000 Hz (p>0.05).
Conclusion: The outcomes of the stapedotomies with 0.4 and 0.6 mm Teflon prostheses were similar to each other in terms of postoperative hearing gain, pure tone averages, and air-bone gap. However, only at 2000 Hz, air conduction thresholds were found to be better in patients with 0.6 mm prosthesis, comparing to the ones with 0.4 mm.

Keywords: Stapedotomy, otosclerosis, prosthesis, diameter, hearing, outcome



Corresponding Author: Mehmet Ilhan Şahin, Türkiye
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