Evidence map›Paper›PMID 40381029›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 Society2025

Analysis of risk factors affecting lumbosacral pseudoarthrosis in multi-segmental fusion: a CT-based study.

Young-Il Ko, Myung-Sup Ko, Chungwon Bang, Kihyun Kwon, Jaehyeong Hur, Hyung-Youl Park, Sang-Il Kim, Young-Hoon Kim

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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, 2025. 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

8 authors.

Young-Il KoDepartment of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.ORCID http://orcid.org/0000-0002-3718-2253
Myung-Sup KoDepartment of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.ORCID http://orcid.org/0009-0004-4164-0458
Chungwon BangDepartment of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.ORCID http://orcid.org/0000-0002-6138-1527
Kihyun KwonDepartment of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.ORCID http://orcid.org/0000-0002-2510-280X
Jaehyeong HurDepartment of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.ORCID http://orcid.org/0009-0005-8095-2929
Hyung-Youl ParkDepartment of Orthopedic Surgery, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.ORCID http://orcid.org/0000-0002-0084-8867
Sang-Il KimDepartment of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.ORCID http://orcid.org/0000-0002-2758-0012
Young-Hoon KimDepartment of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea. boscoa@catholic.ac.kr.ORCID http://orcid.org/0000-0003-1237-4600

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study aimed to evaluate factors influencing the occurrence of pseudoarthrosis in L5-S1 fusion during long-level fusion.

methodsA retrospective analysis was conducted on 88 patients who underwent L5-S1 interbody fusion with minimum 2 years of follow up. The fusion status of the lumbosacral joint was evaluated using computed tomography of postoperative two year and patients were divided into union and nonunion group. The study assessed sagittal parameters, clinical outcomes, and radiological findings. Univariate and multivariate analyses were employed to identify predictors of pseudoarthrosis in lumbosacral joint.

resultsAmong 88 patients, 70 achieved union, while 18 (20.5%) had pseudoarthrosis. Multivariate analysis identified male gender and prior fusion in other segments as nonunion predictors (p = 0.034, OR = 3.665; p = 0.045, OR = 3.099, respectively). S1 screw loosening was significantly higher in the nonunion group (p = 0.002).

conclusionInterbody fusion at the lumbosacral joint demonstrates a relatively high rate of nonunion, especially in males and patients with prior fusion in other segments. Caution is warranted in performing interbody fusion at the lumbosacral joint in such cases due to an elevated risk of nonunion. Loosening of S1 screw warrants careful consideration to prevent pseudoarthrosis.

Indexed as

Lumbar VertebraePostoperative ComplicationsPseudarthrosisSacrumSpinal FusionAdultAgedFemaleHumansMaleMiddle AgedRetrospective StudiesRisk FactorsTomography, X-Ray ComputedLumbosacral fusionMultilevel spinal fusionPseudoarthrosisS1 screw looseningSpinal fusion surgery

Identifiers

PMID40381029

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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.