Evidence map›Paper›PMID 29116395›Full record

ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2018

Correlations between sedimentation sign, dural sac cross-sectional area, and clinical symptoms of degenerative lumbar spinal stenosis.

Sangbong Ko

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Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 20% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Use and misuse of the sedimentation sign in lumbar spine stenosis.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2025
    Pooled it
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  9. [Lumbar spinal stenosis].Orthopadie (Heidelberg, Germany) · 2022
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  11. Nerve root sedimentation sign on MRI: A triage screen for leg dominant symptoms?European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2021
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  12. [The application of classification of lateral region of lumbar spinal canal for treatment of lumbar spinal stenosis in geriatric patients using full endoscopic transforaminal decompression surgery].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2020
    Article
  13. Analysis of radiological parameters associated with decreased fractional anisotropy values on diffusion tensor imaging in patients with lumbar spinal stenosis.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2019
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Sangbong KoDaegu Catholic University Medical Center, 33, Duryugongwon-ro 17-gil, Nam-gu, Taegu, 42472, Korea. bong@cu.ac.kr.ORCID http://orcid.org/0000-0003-3527-9251
Daegu Catholic University Medical Center · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIn this study, we addressed the correlation between the cross-sectional area (CSA) of the dural sac and the nerve root sedimentation sign (SedSign) and the correlation between the distance of claudication and the CSA of the dural sac or SedSign in patients with lumbar spinal stenosis. We also evaluated the reliability of clinical symptom prediction.

methodsWe checked claudication distance using a questionnaire, and we gauged low back pain when standing, referred pain, and radiating pain using visual analog scale scores. Three observers measured the CSA of the dural sac and SedSign, and normal nerve root sedimentation was classified as negative (N) and the absence of nerve root sedimentation was positive (P). P was sub-classified as positive with room [P(+); empty space apparent in the dura] or positive without room [P(-); no empty space in the dura]. SedSign reflected ongoing sedimentation inside the spinal canal of the nerve roots. We demonstrated negative sedimentation for the nerve root except for exiting nerve roots that settled into more than half of the dorsal region of the spinal canal and positive sedimentation as compressed nerve roots or as distribution of nerve roots that conglomerated from the ventral to the dorsal part of the equator as nerve roots. We evaluated functional outcomes using the Oswestry Disability Index and Roland-Morris Disability Questionnaire. One-way ANOVAs, Chi square tests, and correlation analyses evaluated the correlation CSAs and SedSigns.

resultsThe total CSAs for the 716 sites were 98.63 ± 34.38 for N, 76.78 ± 28.78 for P(+), and 55.43 ± 27.77 for P(-), which were all statistically significant (p = 0.01). The correlations between pain and SedSign were not statistically significant (p > 0.05). There was no statistical significance in the correlations between the distance of the claudication and the CSA of the dura sac and the SedSign and between the functional score and the SedSign (both p > 0.05).

conclusionsIncreasing severity of SedSign indicates progressively smaller dural sac CSA, but there is an inconsistent association with clinical symptoms. Therefore, it is reasonable to suggest that spinal stenosis is severe in patients with severe symptoms.

Indexed as

Spinal StenosisCohort StudiesHumansLumbar VertebraeCross-sectional areaLumbar spineSedimentation signSpinal stenosis

Identifiers

PMID29116395
OpenAlexW2767588760

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Registered trials

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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.