Evidence map›Paper›PMID 39488599›Full record

ArticleEuropean archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery2025

Impact of cochlear detailed morphology on insertion results and intracochlear trauma of a slim pre-curved electrode array: a micro-CT study.

Jiabao Mao, Linhan Huang, Zhangcai Chi, Min Chen, Wen Li, Shufeng Li

Abstract read
PubMed Publisher
In one paragraph

Article in European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Cochlear integrity and scalar translocation assessment after cochlear implantation based on three-dimensional anatomical reconstructions.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2026
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Jiabao Mao *ENT Institute and Department of Otolaryngology, Eye and ENT Hospital, Fudan University, Shanghai, 20031, China.
Linhan Huang *ENT Institute and Department of Otolaryngology, Eye and ENT Hospital, Fudan University, Shanghai, 20031, China.
Zhangcai ChiENT Institute and Department of Otolaryngology, Eye and ENT Hospital, Fudan University, Shanghai, 20031, China.
Min ChenENT Institute and Department of Otolaryngology, Eye and ENT Hospital, Fudan University, Shanghai, 20031, China.
Wen LiENT Institute and Department of Otolaryngology, Eye and ENT Hospital, Fudan University, Shanghai, 20031, China.
Shufeng LiENT Institute and Department of Otolaryngology, Eye and ENT Hospital, Fudan University, Shanghai, 20031, China. lisf@fudan.edu.cn.ORCID http://orcid.org/0000-0001-5403-5717

Funding

Artificial Hearing Medical Engineering Interdisciplinary Innovation Team from Eye & ENT Hospital of Fudan University No. YGJC001Science and Technology Commission of Shanghai Municipality No.21ZR1411600
6 · The paper itself

Abstract

objectiveThis study aimed to evaluate the impact of detailed cochlear dimensions, assessed using micro-CT (µCT) imaging, on insertion outcomes and associated trauma with a new slim, precurved electrode array. MATERIALS AND

methodsEleven temporal bone specimens underwent implantation of a 22-electrode slim precurved array via the round window. High-resolution µCT scans post-implantation enabled visualization of cochlear structures and electrode positioning. Combination with subsequent scans taken after electrodes removal, we analyzed angular insertion depth (AID), insertion length, number of electrodes inserted, cochlear dimensions (specifically cochlear duct length (CDL), basal turn diameter, scala tympani dimension), and intracochlear trauma of fine structures. Statistical analyses were performed to correlate cochlear detailed dimensions and morphology with insertion outcomes and trauma.

resultsThe mean AID was 351.82°, and the mean insertion length was 21.07 mm. CDL showed positive correlations with AID and insertion length. Basal turn diameter (value B) positively correlated with AID and insertion length, unlike value A. Middle-basal turn (M/B) relationships (angle and height) significantly influenced insertion depth. The cochleae with smaller M/B heights and specific angles were more susceptible to insertion trauma. Larger basal turn diameters correlated with increased trauma and electrode translocation into the scala vestibuli.

conclusionThis study highlights the importance of precise cochlear measurements in predicting and optimizing cochlear implant outcomes. Specific cochlear dimensions and anatomical shapes were identified as critical factors affecting insertion depth, trauma risk, and electrode positioning. Utilizing micro-CT provided detailed insights into cochlear anatomy and insertion outcomes, offering valuable data for advancing cochlear implant technology and surgical practices.

Indexed as

CochleaCochlear ImplantationCochlear ImplantsTemporal BoneElectrodes, ImplantedHumansMaleProsthesis DesignX-Ray MicrotomographyAngular insertion depth, AIDCochlear duct lengthCochlear implantationCochlear morphologyInsertion traumaMicro-computed tomography, µCT

Identifiers

PMID39488599

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.