TITLE:
Device Fixation in Cochlear Implant Surgery: Bone Well vs. Subperiosteal Muscle Pocket Technique
AUTHORS:
Raquel A. Lauria, Gisele M. Truzzi, Alexandre Caixeta Guimarães, Sílvia Badur Curi, Arthut M. Castilho, Jorge Rizzato Paschoal, Walter Adriano Bianchini, Guilherme Machado de Carvalho
KEYWORDS:
Cochlear Implant, Cochlear Implants Complications, Hearing Loss, Device Migration
JOURNAL NAME:
Open Access Library Journal,
Vol.2 No.12,
December
4,
2015
ABSTRACT: Introduction: Cochlear implantation (CI) is a worldwide procedure that provides
hearing rehabilitation and improves speech perception. One of the described complications
is the device migration, which can result of failure of receiver-stimulator (R/S)
fixation. This study aims to describe the outcomes of cochlear implant receiver-stimulator (RS) placement (bone well and the subperiosteral temporal pocket technique without fixation).
Methods: A retrospective case review is developed in tertiary care university hospital
center that compares the bone well and the subperiosteral temporal pocket technique
without fixation in two periods (at the end of the surgery and one year after CI
surgery). Results: The age range from 22 to 64 years (average of 41.2 year-old).
Follow-up time ranges from 12 to 51 months (average 24 months). The patients, divided
into two groups (subperiostal pocket = 6 patients and bone well = 3 patients), are
analyzed through major and minor complications. No intraoperative wounds or intracranial
complications have been observed in either group. Device migration occurs in three
patients of subperiostal pocket group (50%), but with no apparent clinical outcomes.
The migration measure is about not more than 1 up to 2 centimeters antero-inferiorly
by the radiography evaluation. Conclusion: Device migration is more frequent in the subperioteal pocket group (50%) with
statistical significance (p