Nitinol-teflon stapes prosthesis improves low-frequency hearing results after stapedotomy

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology
Charles A Mangham

Abstract

To determine if nitinol-Teflon shape-memory stapes prostheses offer a hearing result advantage compared with platinum-Teflon pistons that must be manually crimped. Retrospective chart review. One hundred eighty-eight consecutive ears with either a platinum or a nitinol piston and primary stapes surgery between 1998 and 2009. Subspecialty private practice. One hundred forty-four ears received a platinum 0.6-mm-diameter piston, and 44 ears received a nitinol 0.6-mm-diameter piston. American Academy of Otolaryngology-Head and Neck Surgery guidelines, including 4-frequency pure-tone average air-bone (AB) gap, and success (gap <or= 10 dB) rate. Success at closing the AB gap was comparable for both groups (platinum, 96%; nitinol, 92%; p = not significant). The nitinol group had significantly smaller mean AB gaps in the lower frequencies (at 250 Hz, 9.3 versus 15.4 dB and at 500 Hz, 1.9 versus 5.0 dB; p's < 0.01), but not at 1, 2 or 4 kHz. The highly malleable platinum loop was adaptable to various incus diameters and was easy to crimp. The 360-degree circumferential version of the nitinol prosthesis may adapt to various incus diameters better than the original version (minimum heat-crimped diameter, 0.70 versus 0.76 mm). In some case...Continue Reading

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Citations

Dec 15, 2010·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Christof RoosliAlex M Huber
Aug 8, 2013·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Christof Roosli, Alexander M Huber
May 2, 2013·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·An-Suey ShiaoChia-Huei Chu
Nov 18, 2011·Auris, Nasus, Larynx·Marco FontanaGregorio Babighian
Jun 8, 2013·Brazilian Journal of Otorhinolaryngology·Andre Luiz de AtaideTatiana Mauad Patruni
Jun 12, 2018·The Journal of Laryngology and Otology·G J Watson, M da Cruz
Jul 15, 2015·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Jeremy LavyOwain Hughes

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