Evidence map›Paper›PMID 32661634›Full record

ArticleInternational orthopaedics2020

Impact of lordotic cages in the restoration of spinopelvic parameters after dorsal lumbar interbody fusion: a retrospective case control study.

Stavros Oikonomidis, Vincent Heck, Sonja Bantle, Max Joseph Scheyerer, Christoph Hofstetter, Stefan Budde, Peer Eysel, Jan Bredow

Open access · hybridAbstract read
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In one paragraph

Article in International orthopaedics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
1.2field-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

4 citing papers in PubMed, 13 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Biomechanical analysis of lumbar interbody fusion supplemented with various posterior stabilization systems.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
    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

8 authors at 3 institutions in 2 countries.

Stavros OikonomidisFaculty of Medicine and University Hospital Cologne, Department of Orthopedics and Trauma Surgery, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany. Stavros.oikonomidis@uk-koeln.de.ORCID 0000-0002-7637-8611
Vincent HeckFaculty of Medicine and University Hospital Cologne, Department of Orthopedics and Trauma Surgery, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany.
Sonja BantleFaculty of Medicine and University Hospital Cologne, Department of Orthopedics and Trauma Surgery, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany.
Max Joseph ScheyererFaculty of Medicine and University Hospital Cologne, Department of Orthopedics and Trauma Surgery, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany.
Christoph HofstetterDepartment of Neurological Surgery, University of Washington, Seattle, WA, USA.
Stefan BuddeDepartment of Orthopedic Surgery, Hannover Medical School, Anna-von-Borries-Strasse 1-7, 30625, Hanover, Germany.
Peer EyselFaculty of Medicine and University Hospital Cologne, Department of Orthopedics and Trauma Surgery, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany.
Jan BredowFaculty of Medicine and University Hospital Cologne, Department of Orthopedics and Trauma Surgery, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany.
University of Cologne · DEMedizinische Hochschule Hannover · DEUniversity of Washington · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeAim of this study was to compare the reconstruction of radiological sagittal spinopelvic parameters between lordotic (10°) and normal cages (0°) after dorsal lumbar spondylodesis.

methodsThis retrospective monocentric study included patients who received dorsal lumbar spondylodesis between January 2014 and December 2018. Inclusion criteria were degenerative lumbar diseases and mono- or bi-segmental fusions in the middle and lower lumbar region. Exclusion criteria were long-distance fusions (3 segments and more) and infectious and tumour-related diseases. The sagittal spinopelvine parameters (lumbar lordosis, segmental lordosis, sacral slope, pelvic incidence, and pelvic tilt) were measured pre- and post-operatively by two examiners at two different times. The patients were divided into 2 groups (group 1: lordotic cage, group 2: normal cage).

resultsOne hundred thirty-eight patients (77 female, 61 male) with an average age of 66.6 ± 11.2 years (min.: 26, max.: 90) were included in the study based on the inclusion criteria. Ninety-two patients (66.7%) received 0° cages and 46 (33.3%) lordotic cages (10°). Segmental lordosis was increased by 4.2° on average in group 1 and by 6.5° in group 2 (p = 0.074). Average lumbar lordosis was increased by 2.1° in group 1 and by 0.6° in group 2 (p = 0.378). There was no significant difference in the correction of sagittal spinopelvic parameters. Inter- and inter-class reliability was between 0.887 and 0.956.

conclusionAccording to the results of our study, no advantages regarding sagittal radiological parameters for the implantation of a lordotic cage could be demonstrated.

Indexed as

LordosisSpinal FusionAgedCase-Control StudiesFemaleHumansLumbar VertebraeLumbosacral RegionMaleMiddle AgedReproducibility of ResultsRetrospective StudiesCageInterbody fusionLordotic angleLumbar lordosisSagittal balanceSpinal fusion

Identifiers

PMID32661634
PMCPMC7679311
OpenAlexW3042661521

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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.