Evidence map›Paper›PMID 29537931›Full record

ArticleUpsala journal of medical sciences2018

The secondary spiral lamina and its relevance in cochlear implant surgery.

Sumit Agrawal, Nadine Schart-Morén, Wei Liu, Hanif M Ladak, Helge Rask-Andersen, Hao Li

Open access · diamondAbstract read
In one paragraph

Article in Upsala journal of medical sciences, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
3.3field-weighted citation impact, top 8% of its field
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

11 citing papers in PubMed, 24 citations in OpenAlex.

  1. Three-dimensional printing and cochlear implantation: a systematic review.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
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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 at 2 institutions in 2 countries.

Sumit Agrawala Department of Otolaryngology-Head and Neck Surgery , Western University , London , ON , Canada.
Nadine Schart-Morénb Department of Surgical Sciences, Section of Otolaryngology, Department of Otolaryngology , Uppsala University Hospital , Uppsala , Sweden.
Wei Liub Department of Surgical Sciences, Section of Otolaryngology, Department of Otolaryngology , Uppsala University Hospital , Uppsala , Sweden.
Hanif M Ladaka Department of Otolaryngology-Head and Neck Surgery , Western University , London , ON , Canada.
Helge Rask-Andersenb Department of Surgical Sciences, Section of Otolaryngology, Department of Otolaryngology , Uppsala University Hospital , Uppsala , Sweden.
Hao Lib Department of Surgical Sciences, Section of Otolaryngology, Department of Otolaryngology , Uppsala University Hospital , Uppsala , Sweden.
Uppsala University Hospital · SEWestern University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveWe used synchrotron radiation phase contrast imaging (SR-PCI) to study the 3D microanatomy of the basilar membrane (BM) and its attachment to the spiral ligament (SL) (with a conceivable secondary spiral lamina [SSL] or secondary spiral plate) at the round window membrane (RWM) in the human cochlea. The conception of this complex anatomy may be essential for accomplishing structural preservation at cochlear implant surgery. MATERIAL AND

methodsSixteen freshly fixed human temporal bones were used to reproduce the BM, SL, primary and secondary osseous spiral laminae (OSL), and RWM using volume-rendering software. Confocal microscopy immunohistochemistry (IHC) was performed to analyze the molecular constituents.

resultsSR-PCI reproduced the soft tissues including the RWM, Reissner's membrane (RM), and the BM attachment to the lateral wall (LW) in three dimensions. A variable SR-PCI contrast enhancement was recognized in the caudal part of the SL facing the scala tympani (ST). It seemed to represent a SSL allied to the basilar crest (BC). The SSL extended along the postero-superior margin of the round window (RW) and immunohistochemically expressed type II collagen.

conclusionsUnlike in several mammalian species, the human SSL is restricted to the most basal portion of the cochlea around the RW. It anchors the BM and may influence its hydro-mechanical properties. It could also help to shield the BM from the RW. The microanatomy should be considered at cochlear implant surgery.

Indexed as

Basilar MembraneCochlear ImplantationHumansImmunohistochemistryRound Window, EarSpiral LaminaBasilar membranecochleahumansecondary spiral laminasynchrotron-phase contrast imaging

Identifiers

PMID29537931
PMCPMC5901472
OpenAlexW2792599188

What OpenQuestion holds

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LicenceCC BY
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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.