Rinze A Tange1, Wilko Grolman, Wouter A Dreschler. 1. Department of Otolaryngology-Head and Neck Surgery, Division of Otology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands. R.A.Tange@amc.uva.nl
Abstract
OBJECTIVE: The objective of this study was to evaluate the hearing results of stapes surgery with 2 different full metal stapes prostheses. STUDY DESIGN: Retrospective analyses were carried out on the pre- and postoperative hearing results obtained after primary stapedotomy with 2 different prostheses. PATIENTS: We studied 106 patients with otosclerosis treated by stapes surgery. INTERVENTION: Fifty-three patients had a stapedotomy with a gold piston and 53 patients received a titanium piston after stapedotomy. MAIN OUTCOME MEASURES: The results were compared according to mean audiometric parameters. Furthermore, the individual audiologic results were demonstrated with the Amsterdam Hearing Evaluations Plot (AHEP). This method is a visual presentation of the hearing result for each operated ear. RESULTS: These AHEPs showed that the heavier gold piston (shaft Ø 0.4 mm and weight 10192.0 microg) gives more overclosure gain (28.3%) than the lightweight (shaft Ø 0.4 mm and weight 2541.0 microg) titanium piston (9.4% cases of overclosure). CONCLUSIONS: Because of the different properties of the 2 pistons (gold very malleable, titanium rather stiff), a choice can be made for different anatomic or pathologic situations in the operated middle ear. The "overclosure effect" of the gold piston is higher compared with the titanium piston.
OBJECTIVE: The objective of this study was to evaluate the hearing results of stapes surgery with 2 different full metal stapes prostheses. STUDY DESIGN: Retrospective analyses were carried out on the pre- and postoperative hearing results obtained after primary stapedotomy with 2 different prostheses. PATIENTS: We studied 106 patients with otosclerosis treated by stapes surgery. INTERVENTION: Fifty-three patients had a stapedotomy with a gold piston and 53 patients received a titanium piston after stapedotomy. MAIN OUTCOME MEASURES: The results were compared according to mean audiometric parameters. Furthermore, the individual audiologic results were demonstrated with the Amsterdam Hearing Evaluations Plot (AHEP). This method is a visual presentation of the hearing result for each operated ear. RESULTS: These AHEPs showed that the heavier gold piston (shaft Ø 0.4 mm and weight 10192.0 microg) gives more overclosure gain (28.3%) than the lightweight (shaft Ø 0.4 mm and weight 2541.0 microg) titanium piston (9.4% cases of overclosure). CONCLUSIONS: Because of the different properties of the 2 pistons (gold very malleable, titanium rather stiff), a choice can be made for different anatomic or pathologic situations in the operated middle ear. The "overclosure effect" of the gold piston is higher compared with the titanium piston.
Authors: Joachim Albert Hornung; Christoph Brase; Alessandro Bozzato; Johannes Zenk; Bernhard Schick; Heinrich Iro Journal: Eur Arch Otorhinolaryngol Date: 2010-01 Impact factor: 2.503