Surgical approaches and related microsurgical anatomy about suprameatal approach: new surgical approach for cochlear implantation.
- Author:
Hanbo LIU
1
;
Yong FENG
;
Dengming CHEN
;
Lingyun MEI
;
Chufeng HE
;
Xinzhang CAI
Author Information
1. Department of Otorhinolaryngology, Affiliated Xiangya Hospital, Central South University, Changsha, 420008, China.
- Publication Type:Journal Article
- MeSH:
Adult;
Child;
Chorda Tympani Nerve;
anatomy & histology;
Cochlear Implantation;
methods;
Ear Canal;
anatomy & histology;
surgery;
Facial Nerve;
anatomy & histology;
Humans;
Round Window, Ear;
anatomy & histology
- From:
Journal of Clinical Otorhinolaryngology Head and Neck Surgery
2007;21(10):447-449
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To study a new surgical approach for cochlear implantation.
METHOD:We operated on 8 cadaver heads (16 side) use Suprameatal approach for cochlear implantation, describe related anatomic mark.
RESULT:The electrode is passed through the suprameatal tunnel, the EAC groove, the space underneath the chorda tympani between the malleal and the long process of the incus, and the cochleostomy. Angle between tunnel and temporal imaginary line is 28.0 degrees +/- 1.3 degrees in adult, 29.0 degrees +/- 1.7 degrees in children, the location of inserting electrode into cochleostomy is (1.31 +/- 0.13) mm to round window in adult, (1.19 +/- 0.12) mm in child.
CONCLUSION:The SMA approach is a safe technique, maintaining a safe distance to facial nerve and chorda tympani. So We should make right decision in clinic.
