The Internal Dimensions of the Cochlear Scalae With Special Reference to Cochlear Electrode Insertion Trauma
The Internal Dimensions of the Cochlear Scalae With Special Reference to Cochlear Electrode Insertion Trauma
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DOI：
10.1097/mao.0b013e3181d27b5e
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发表时间：
2010-07-01
影响因子：
2.1
通讯作者：
Westhofen, Martin
中科院分区：
文献类型：
--
作者：
Biedron, Slavomir;Prescher, Andreas;Westhofen, Martin
Hypothesis: To investigate the intracochlear micromorphology with regard to frequent patterns of cochlear electrode insertion trauma.Objective: Cochlear implantation is a widely accepted treatment for deafness and high-grade sensorineural hearing loss. Although the device and the implantation methods are continuously optimized, damage of intracochlear structures due to electrode insertion is a frequent finding in temporal bone studies. Reduction of insertional trauma is important for the preservation of residual hearing and on the background of increasing numbers of cochlear implant recipients.Materials and Methods: This study was performed with histologic specimens from the "Wittmaack temporal bone collection" (Hamburg, Germany) to examine the diameters of intracochlear spaces and to correlate the micromorphology of cochlear ducts to frequent patterns of intracochlear insertion trauma.Results: The diameter of the scala tympani decreases by approximately 300 mu m during the ascending part of the basal turn. In this region, the intersegmental decrease exceeds the assumed linear diameter decrease significantly (p
