Evidence map›Paper›PMID 35900220›Full record

ReviewEFORT open reviews2022

Risk factors for nonunion following surgically managed, traumatic, diaphyseal fractures: a systematic review and meta-analysis.

Signe Steenstrup Jensen, Niels Martin Jensen, Per Hviid Gundtoft, Søren Kold, Robert Zura, Bjarke Viberg

Open access · goldAbstract readReview
In one paragraph

Review in EFORT open reviews, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
4.8field-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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Body mass index, weight bearing, and delayed union after femoral shaft fracture nailing: a retrospective cohort study.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2026
    Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Surgical treatment of non-unions in the ulna and radius: a one-year outcome study.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2025
    Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Observational
  16. The sole use of stem cells in treating fracture nonunion: a scoping review.Archives of orthopaedic and trauma surgery · 2025
    Article
  17. Article
  18. Review
  19. Article
  20. Managing Nonunion in Orthopedic Surgery.Indian journal of orthopaedics · 2024
    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 at 4 institutions in 2 countries.

Signe Steenstrup JensenDepartment of Orthopedic Surgery and Traumatology, Lillebaelt Hospital, Kolding, Denmark.
Niels Martin JensenDepartment of Orthopedic Surgery and Traumatology, Lillebaelt Hospital, Kolding, Denmark.
Per Hviid GundtoftDepartment of Orthopedic Surgery and Traumatology, Aarhus University Hospital, Aarhus, Denmark.
Søren KoldDepartment of Orthopedic Surgery, Aalborg University Hospital, Aalborg, Denmark.
Robert ZuraDepartment of Orthopedic Surgery, Louisiana State University Medical Center, New Orleans, Louisiana, USA.
Bjarke VibergDepartment of Orthopedic Surgery and Traumatology, Lillebaelt Hospital, Kolding, Denmark.
Lillebaelt Hospital · DKAalborg University Hospital · DKAarhus University Hospital · DKUniversity Medical Center New Orleans · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: There are several studies on nonunion, but there are no systematic overviews of the current evidence of risk factors for nonunion. The aim of this study was to systematically review risk factors for nonunion following surgically managed, traumatic, diaphyseal fractures. Methods: Medline, Embase, Scopus, and Cochrane were searched using a search string developed with aid from a scientific librarian. The studies were screened independently by two authors using Covidence. We solely included studies with at least ten nonunions. Eligible study data were extracted, and the studies were critically appraised. We performed random-effects meta-analyses for those risk factors included in five or more studies. PROSPERO registration number: CRD42021235213. Results: Of 11,738 records screened, 30 were eligible, and these included 38,465 patients. Twenty-five studies were eligible for meta-analyses. Nonunion was associated with smoking (odds ratio (OR): 1.7, 95% CI: 1.2-2.4), open fractures (OR: 2.6, 95% CI: 1.8-3.9), diabetes (OR: 1.6, 95% CI: 1.3-2.0), infection (OR: 7.0, 95% CI: 3.2-15.0), obesity (OR: 1.5, 95% CI: 1.1-1.9), increasing Gustilo classification (OR: 2.2, 95% CI: 1.4-3.7), and AO classification (OR: 2.4, 95% CI: 1.5-3.7). The studies were generally assessed to be of poor quality, mainly because of the possible risk of bias due to confounding, unclear outcome measurements, and missing data. Conclusion: Establishing compelling evidence is challenging because the current studies are observational and at risk of bias. We conclude that several risk factors are associated with nonunion following surgically managed, traumatic, diaphyseal fractures and should be included as confounders in future studies.

Indexed as

healingnonunionpseudoarthrosisrisk factorstrauma

Identifiers

PMID35900220
PMCPMC9297052
OpenAlexW4283814440

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.