Evidence map›Paper›PMID 35606897›Full record

ReviewGlobal spine journal2023

Radiological Definitions of Sagittal Plane Segmental Instability in the Degenerative Lumbar Spine - A Systematic Review.

Signe F Elmose, Gustav O Andersen, Leah Yacat Carreon, Freyr G Sigmundsson, Mikkel O Andersen

Open access · goldAbstract readReview
In one paragraph

Review in Global spine journal, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
4.5field-weighted citation impact, top 4% 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

23 citing papers in PubMed, 38 citations in OpenAlex.

  1. PVMQ score: a novel imaging parameter for indicating lumbar degeneration and prognosis in patients with L4/5 degenerative lumbar spondylolisthesis.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 · 2026
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  3. Using artificial intelligence and a walking aid to improve lumbar stability parameter evaluation methods.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 · 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

5 authors at 2 institutions in 2 countries.

Signe F ElmoseCenter for Spine Surgery and Research, Spine Center of Southern Denmark, 371420Lillebaelt Hospital, Middelfart, Denmark.ORCID 0000-0003-1522-072X
Gustav O AndersenCenter for Spine Surgery and Research, Spine Center of Southern Denmark, 371420Lillebaelt Hospital, Middelfart, Denmark.ORCID 0000-0002-7598-7538
Leah Yacat CarreonCenter for Spine Surgery and Research, Spine Center of Southern Denmark, 371420Lillebaelt Hospital, Middelfart, Denmark.ORCID 0000-0002-7685-9036
Freyr G SigmundssonDepartment of Orthopaedic surgery, 98837Örebro University Hospital, Örebro, Sweden.ORCID 0000-0002-7376-4664
Mikkel O AndersenCenter for Spine Surgery and Research, Spine Center of Southern Denmark, 371420Lillebaelt Hospital, Middelfart, Denmark.ORCID 0000-0001-8478-8218
Lillebaelt Hospital · DKÖrebro University Hospital · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

designSystematic Review.

objectiveTo collect and group definitions of segmental instability, reported in surgical studies of patients with lumbar spinal stenosis (LSS) and/or lumbar degenerative spondylolisthesis (LDS). To report the frequencies of these definitions. To report on imaging measurement thresholds for instability in patients and compare these to those reported in biomechanical studies and studies of spine healthy individuals.To report on studies that include a reliability study.

methodsThis review was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. Studies eligible for inclusion were clinical and biomechanical studies on adult patients with LDS and/or LSS who underwent surgical treatment and had data on diagnostic imaging. A systematic literature search was conducted in relevant literature databases. Full text screening inclusion criteria was definition of segmental instability or any synonym. Two reviewers independently screened articles in a two-step process. Data synthesis presented by tabulate form and narrative synthesis.

resultsWe included 118 studies for data extraction, 69% were surgical studies with decompression or fusion as interventions, 31% non-interventional studies. Grouping the definitions of segmental instability according similarities showed that 24% defined instability by dynamic sagittal translation, 26% dynamic translation and dynamic angulation, 8% used a narrative definition. Comparison showed that non-interventional studies with a healthy population more often had a narrative definition.

conclusionDespite a reputation of non-consensus, segmental instability in the degenerative lumbar spine can radiologically be defined as > 3 mm dynamic sagittal translation.

Indexed as

clinical spine surgerydiagnostic imaginglumbar degenerative spondylolisthesislumbar segmental instabilityspinal stenosissystematic review

Identifiers

PMID35606897
PMCPMC9972266
OpenAlexW4281394479

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.