Cochlear morphometry in healthy ears of a mexican population: A comparison of measurement techniques - 10/08/21

Morphométrie cochléaire dans les oreilles saines d’une population mexicaine : une comparaison des techniques de mesure

Doi : 10.1016/j.morpho.2021.07.001

H.G. Guzman-Perez ^a,^⁎ , S. Guzman-Lopez ^a, I.S. Villarreal-Del Bosque ^b, N. Villarreal-Del Bosque ^b, A. Quiroga-Garza ^a, J.L. Treviño-González ^c,⁎ , R. Pinales-Razo ^b, M.A. Muñoz-Leija ^a, R.E. Elizondo-Omaña ^a
^a Human Anatomy Department, Medicine Faculty, Universidad Autónoma-de-Nuevo-León, avenue Francisco I. Madero y Dr. Aguirre-Pequeño s/n, Mitras-Centro, 64460 Monterrey, (Nuevo León), Mexico
^b Radiology and Imaging Department, Medicine Faculty, Universidad Autónoma de Nuevo León, University Hospital: “Dr. José-Eleuterio-González”, avenue Francisco I.-Madero-y-Gonzalitos s/n, Mitras Centro, 64460 Monterrey, (Nuevo León), Mexico
^c Otorhinolaryngology and Head and Neck Surgery Department, Medicine Faculty and University Hospital: “Dr. José Eleuterio González”, Universidad Autónoma de Nuevo León, avenue Francisco I. Madero y Gonzalitos s/n, Mitras Centro, 64460 Monterrey, (Nuevo León), Mexico

^⁎Corresponding author. Departamento de Anatomia Humana, Universidad Autonoma de Nuevo León, avenue Madero y Aguirre Pequeño, Col. Mitras Centro, s/n, Col. Mitras Centro, 64460 Monterrey Nuevo León, México.Departamento de Anatomia Humana, Universidad Autonoma de Nuevo Leónavenue Madero y Aguirre Pequeño, Col. Mitras Centro, s/n, Col. Mitras CentroMonterrey, (Nuevo León)64460Mexico^⁎⁎Co-corresponding author.

Sous presse. Épreuves corrigées par l'auteur. Disponible en ligne depuis le Tuesday 10 August 2021
Cet article a été publié dans un numéro de la revue, cliquez ici pour y accéder

Highlights

•	The Alexiades formula and the manual method described by Würfel to measure cochlear length were compared, concluding the equation is an effective and faster method.
•	All variables were significantly higher in men, and significant differences were also found according to the ear side.
•	The time consumption was 5 times faster using the Alexiades formula than the manual method.

Le texte complet de cet article est disponible en PDF.

Summary

Objective

This study describes the cochlear morphometry of a mexican population analysed by laterality and sex. The objective is to compare Cochlear Length (CL) evaluation between Alexiades et al. formula and manual method described by Würfel et al.

Patients

Hispanic patients from Mexico, with an age of 18 years or older, were included. Morphometric examination was performed retrospectively on 200 subjects who underwent previously temporal bone imaging for clinical purposes.

Materials and methods

Horos for Mac program was used to measure CL, cochlear height, distance A, and distance B. WorkStation AW Volume Share 2 was used to obtain volume. CL was measured in 400 temporal bones (228 females, 172 males).

Results

The mean CL was 34.02mm±2.15mm. A significant difference was found in all variables between sex (P=≤0.05) and laterality (P=≤0.05). The Alexiades equation was used for determining CL and compared with the manual formula, with no significant differences (κ=0.71). However, the time consumption was 5 times faster with the calculated method. The Alexiades formula was demonstrated to be a reliable method measurement.

Conclusion

Preoperative Computed Tomography evaluation of the internal ear helps to plan the Cochlear Implants (CI) surgical approach and allows to choose an appropriate electrode length for each necessity. Our findings may be useful to facilitate and adapt preoperative management of CI surgery by considering the characteristics of cochlear morphology of Latin-American populations.

Le texte complet de cet article est disponible en PDF.

Keywords : Cochlea, Cochlear morphometry, Cochlear implant, Otology