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Journal Information
Vol. 58. Issue 7.
Pages 302-310 (January 2007)
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Vol. 58. Issue 7.
Pages 302-310 (January 2007)
Original articles
Analysis of the Mechanical-Acoustic Features of the Middle Ear After Stapedial Surgery Both With and Without Stapes Muscle Preservation
Estudio de las características mecanoacústicas del oído medio sometido a cirugía estapedial con y sin conservación del tendón del estribo
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Luis A. Vallejo
Corresponding author
lvallejoval@telefonica.net

Correspondence: Servicio de Otorrinolaringología. Hospital Universitario del Río Hortega. Rondilla de Santa Teresa, s/n. 47010 Valladolid. España.
, Elisa Gil-Carcedo, David Herrero, Carlos Sánchez, Elena Sánchez, Luis M. Gil-Carcedo
Servicio de Otorrinolaringología, Hospital Universitario del Río Hortega, Departamento de Cirugía, Oftalmología y Otorrinolaringología, Universidad de Valladolid, Valladolid, Spain
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Abstract
Introduction and objective

Stapes replacement surgery performed in cases of otosclerosis alters various anatomical (ossicular, ligament, and tendon) elements of the middle ear affecting their physical properties. The goal of our work is to determine which of the surgical techniques applied during otosclerosis most respects the mechanical-acoustic features of the middle ear.

Patients and method

We analyzed the audiological and admittance results of 100 patients who underwent various stapedial replacement techniques and compared them to 20 otologically healthy subjects.

Results

The audiological results obtained are similar in the different surgical techniques compared. However, those techniques in which the stapedial muscle tendon is preserved offer similar hearing resonance frequencies post intervention as healthy ears, which was not found to be the case in the remaining techniques evaluated.

Conclusions

We feel that the stapedial tendon should be preserved during otosclerosis surgery as the mechanicalacoustic features of the ear are thus better conserved, leading to enhanced language recognition in noisy environments.

Key words:
Stapedial surgery
Multifrequency tympanometry
Otosclerosis
Resonance frequency
Resumen
Introducción y objetivos

La cirugía de sustitución estapedial realizada en casos de otosclerosis altera diversos elementos anatómicos del oído medio (osiculares, ligamentosos y tendinosos), lo que modifica sus propiedades físicas. El objetivo del trabajo es determinar qué técnicas de las practicadas durante la cirugía de la otosclerosis respetan más las características mecanoacústicas del oído medio.

Pacientes y método

Estudiamos los resultados audiológicos y admitanciométricos de 100 pacientes sometidos a diversas técnicas de sustitución estapedial y los comparamos con los de 20 sujetos otológicamente sanos.

Resultados

Los resultados audiológicos obtenidos son similares en los diversos tipos de técnicas quirúrgicas comparadas; sin embargo, las que respetan el tendón del músculo estapedial presentan, tras la intervención, frecuencias de resonancia del oído similares a los oídos sanos, lo que no ocurre con las demás técnicas evaluadas.

Conclusiones

A la luz de los resultados, consideramos que debe conservarse el tendón estapedial durante la cirugía de la otosclerosis, ya que de este modo se preservan mejor las características mecanoacústicas del oído, lo que repercute en una mejor discriminación del lenguaje en ambientes ruidosos.

Palabras clave:
Cirugía estapedial
Timpanometría multifrecuencia
Otosclerosis
Frecuencia de resonancia

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