Evidence map›Paper›PMID 40853457›Full record

SynthesisEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2026

Distal junctional failure in posterior cervical and cervicothoracic fusion: A systematic review and meta-analysis of associated factors.

Mohsen Rostami, Sadegh Bagherzadeh, Vincent Traynelis, Ricardo Fontes

Abstract readSystematic ReviewMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis 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, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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

1 citing paper in PubMed.

  1. 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

4 authors.

Mohsen RostamiDepartment of Neurosurgery, Rush University Medical Center, Chicago, USA. mohsen_rostami@rush.edu.
Sadegh BagherzadehSports Medicine Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran.ORCID 0009-0000-1545-9218
Vincent TraynelisDepartment of Neurosurgery, Rush University Medical Center, Chicago, USA.
Ricardo FontesDepartment of Neurosurgery, Rush University Medical Center, Chicago, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDistal junctional kyphosis (DJK) is a significant complication following posterior cervical or cervicothoracic fusion. Despite the increasing number of these procedures, the factors associated with DJK remain underexplored, particularly compared to proximal junctional kyphosis. This systematic review and meta-analysis aimed to identify key factors associated with DJK and provide actionable recommendations for its prevention.

methodsA comprehensive search of PubMed, Scopus, Embase, and Web of Science was conducted to identify case-control and cohort studies reporting on factors associated with DJK in adult patients undergoing posterior cervical or cervicothoracic fusion. Data on demographics, radiographic parameters, and surgical factors were extracted. Meta-analysis was performed using a random-effects model, with odds ratios (OR) and standardized mean differences (SMD) calculated for significant variables.

resultsDJK occurred in 15.2% of patients across the included studies. Significant associated factors included osteoporosis, preoperative cervical kyphosis greater than 3.4°, preoperative C2-C7 sagittal vertical axis (cSVA) exceeding 30 mm, postoperative residual cSVA exceeding 32 mm, a T1 slope change greater than 6 degrees, fusions involving more than five levels, and selecting the lowest instrumented vertebra (LIV) in the lower thoracic or thoracolumbar regions.

conclusionOptimizing sagittal alignment, addressing osteoporosis, and carefully selecting the lowest instrumented vertebra may help reduce DJK incidence in posterior cervical and cervicothoracic fusion surgeries. Future prospective studies are needed to refine prevention strategies and improve patient outcomes.

Indexed as

Cervical VertebraeKyphosisPostoperative ComplicationsSpinal FusionThoracic VertebraeHumansCervicothoracicDJFDJKSystematic review

Identifiers

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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.