Evidence map›Paper›PMID 29876634›Full record

ArticleSurgical and radiologic anatomy : SRA2018

Magnetic resonance morphometry of the adult normal lumbar intervertebral space.

Apostolos H Fyllos, Dimitrios L Arvanitis, Apostolos H Karantanas, Sokratis E Varitimidis, Michael Hantes, Aristeidis H Zibis

Abstract read
PubMed Publisher
In one paragraph

Article in Surgical and radiologic anatomy : SRA, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
–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

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. 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.

Apostolos H FyllosDepartment of Anatomy, School of Medicine, University of Thessaly, Panepistimiou 3 (Biopolis), 41110, Larissa, Greece.ORCID http://orcid.org/0000-0003-1384-2074
Dimitrios L ArvanitisDepartment of Anatomy, School of Medicine, University of Thessaly, Panepistimiou 3 (Biopolis), 41110, Larissa, Greece.
Apostolos H KarantanasDepartment of Radiology, School of Medicine, University of Crete, 71110, Heraklion, Greece.ORCID http://orcid.org/0000-0002-0927-2403
Sokratis E VaritimidisDepartment of Orthopedics, University Hospital of Larisa, 41110, Larissa, Greece.
Michael HantesDepartment of Orthopedics, University Hospital of Larisa, 41110, Larissa, Greece.ORCID http://orcid.org/0000-0001-9494-6048
Aristeidis H ZibisDepartment of Anatomy, School of Medicine, University of Thessaly, Panepistimiou 3 (Biopolis), 41110, Larissa, Greece. ahzibis@gmail.com.ORCID http://orcid.org/0000-0001-7122-4317

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study aims to: (a) quantify and evaluate normal relationships between neighboring spinal units using MR imaging indices, (b) propose an easy-to-apply-and-reproduce method of estimating the correct amount of distraction when surgically restoring a collapsed intervertebral disc, based on individualized measurements.

methodsThis is a retrospective cross-sectional MR imaging study of 119 adult subjects, aged 18-54, asymptomatic for low back pain. Each of the examinees should demonstrate two or more consecutive intervertebral discs classified as Pfirrmann grade I or II to be included. We measured and studied the relationships of disc height index, Dabbs index, Farfan index, disc convexity index and mean and posterior disc height per spinal level using multiple regression analysis. All measurements were tested for intra- and interobserver agreement by two raters.

resultsDHI, Dabbs, Farfan, and mean disc height had a statistically significant correlation with the spinal level and age. Our results were highly reproducible, with excellent inter- and intraobserver agreement and reliability between two raters (ICC = 0.992 and 0.994, respectively). Furthermore, we expressed each intervertebral space as a percentage of its adjacent space, introducing the coefficient α factor for every intervertebral space.

conclusionsOur results suggest that a normal values' database to refer during preoperative planning of correction of a degenerated intervertebral disc is feasible. Our study offers new anatomical and radiological insight in terms of spinal measurements and their potential correlation with current surgical techniques. A new approach for calculating disc space as an expression of its adjacent disc has been introduced with various potential applications.

Indexed as

AdolescentAdultCross-Sectional StudiesFemaleHumansIntervertebral DiscLow Back PainLumbar VertebraeMagnetic Resonance ImagingMaleMiddle AgedReference ValuesReproducibility of ResultsRetrospective StudiesAnatomyIntervertebral discMagnetic resonance imagingSpine

Identifiers

PMID29876634

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.