Minimal mastoidectomy required for cochlear implant through facial recess approach
LI Panpan
SUN Jingwu
CHEN Jianwen
HOU Xiaoyan
SUN Jiaqiang
Abstract：Objective To study the minimum extent of mastoidectomy required in cochlear implantation via the fa-cial recess approach, to facilitate minimally invasive cochlear implantation. Methods Forty six cases of cochlear implanta-tion completed between July 2014 and November 2015 were divided into two groups based on age (under 3 years or at or older than 3 years). Without negatively impacting the implantation procedure, mastoidectomy was gradually expanded and its extent measured, including the anteroposterior and vertical diameters as well as the total area. Results The shape of corti-cal mastoidectomy was essentially a triangle, with an mean anteroposterior diameter at the upper border of 25.86±13.63 mm on left and 23.52±5.72 mm on right. The mean vertical diameter was 10.61±5.15 mm on left and 17.87±4.52 mm on right. The mean area of mastoidectomy was 352.4±17.16 mm2 on left and 414.2±12.01 mm2 (P>0.05). The area of mastoidecto-my was similar between the two age groups (P> 0.05). Conclusions For cochlear implantation via the facial recess ap-proach, limiting the extent of mastoidectomy, without compromising exposure of incus short process, facial recess, round window membrane and promontory fenestration or electrode insertion, can reduce surgical trauma and postoperative retroau-ricular collapse and is an important part of minimally invasive cochlear implantation.
Keywords：sensorineural deafnessCochlear implantsMinimally invasive
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 199-201 )