Table of Contents
ISRN Otolaryngology
Volume 2011, Article ID 932849, 5 pages
Research Article

Comparison of Nitinol Stapes Pistons with Conventional Stapes Pistons: A Cadaver Study

148th Medical Group, ENT Department, Unit 5201, Box 230, Suffolk, IP279PN, UK
2Division of Otolaryngology/Head and Neck Surgery, Madigan Army Medical Center, Tacoma, WA 98431-1100, USA

Received 30 March 2011; Accepted 14 May 2011

Academic Editors: B. Black, T. Just, C. Suárez, and M. von Unge

Copyright © 2011 Samuel A. Spear and James V. Crawford. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objective. To visually compare the Nitinol “smart” stapes prosthesis to conventional manual crimping stapes pistons in temporal bone cadaver specimens. Main Outcome Measures. 10 otolaryngologists were given a photograph of the randomly ordered stapes pistons and asked to use the pictures to answer questions about each stapes piston. The answers to the survey were then recorded for analysis. Results. 8 of 9 Nitinol pistons were described as circular, and 3 of 9 manual crimped pistons were described as circular ( 𝑃 < . 0 5 ). 6 of 9 Nitinol pistons were considered to be in contact with >66% of the incus and 3 of 9 to be in contact with 34–66% of the incus. 3 of 9 manually crimped pistons were considered to be in contact with >66% of the incus, 3 with 34–66% contact and 3 with less than 34% contact. Conclusions. The Nitinol “smart” stapes pistons were considered to provide a more circular and circumferential crimping and to have greater contact with the long process of the incus than conventional stapes pistons.