Applied anatomy of facial recess and posterior tympanum related to cochlear implantation.
- Author:
Tuanming ZOU
1
;
Nanping XIE
;
Menghe GUO
;
Fan SHU
;
Hongzheng ZHANG
Author Information
1. Department of Otolaryngology-Head and Neck Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
- Publication Type:Journal Article
- MeSH:
Anatomic Landmarks;
anatomy & histology;
Chorda Tympani Nerve;
anatomy & histology;
Cochlea;
anatomy & histology;
Cochlear Implantation;
methods;
Ear, Middle;
Facial Nerve Injuries;
prevention & control;
Humans;
Incus;
anatomy & histology;
Organ Sparing Treatments;
methods;
Round Window, Ear;
anatomy & histology;
Stapes;
anatomy & histology;
Temporal Bone;
anatomy & histology;
Tympanic Membrane;
anatomy & histology
- From:
Journal of Clinical Otorhinolaryngology Head and Neck Surgery
2012;26(10):445-448
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To investigate the related parameters of temporal bone structure in the surgery of cochlear implantation through facial recess approach so as to offer a theoretical reference for the avoidance of facial nerve injury and the accurate localization.
METHOD:In a surgical simulation experiment, twenty human temporal bones were studied. The correlation parameters were measured under surgical microscope.
RESULT:Distance between suprameatal spine and short process of incus was (12.44 +/- 0.51) mm. Width from crotch of chorda tympani nerve to stylomastoid foramen was (2.67 +/- 0.51) mm. Distance between short process of incus and crotch of chorda tympani nerve was (15.22 +/- 0.83) mm. The location of maximal width of the facial recess into short process of incus, crotch of chorda tympani nerve were (6.28 +/- 0.41) mm, (9.81 +/- 0.71) mm, respectively. The maximal width of the facial recess was (2.73 +/- 0.20) mm. The value at level of stapes and round window were (2.48 +/- 0.20 mm) and (2.24 +/- 0.18) mm, respectively. Distance between pyramidalis eminence and anterior round window was (2.22 +/- 0.21) mm. Width from stapes to underneath round window was (2.16 +/- 0.14) mm.
CONCLUSION:These parameters provide a reference value to determine the position of cochlear inserting the electrode array into the scale tympani and opening facial recess firstly to avoid potential damage to facial nerve in surgery.
