Evidence map›Paper›PMID 41402796›Full record

SynthesisBMC musculoskeletal disorders2025

Does the development of AVN after the modified Dunn procedure for slipped capital femoral epiphysis (SCFE) depend on slip stability? A systematic review and meta-analysis.

Mohammad Kamal Abdelnasser, Ahmed Abdelazim Hassan, Mohammed Ibrahim, Abdelkhalek Hafez Ibrahim, Nariman Abol Oyoun

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in BMC musculoskeletal disorders, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
  2. Review
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.

Mohammad Kamal AbdelnasserDepartment of Orthopaedics and Trauma Surgery, Assiut University Hospitals, Assiut, 71515, Egypt.
Ahmed Abdelazim HassanDepartment of Orthopaedics and Trauma Surgery, Assiut University Hospitals, Assiut, 71515, Egypt. ahmed_hassan1@med.aun.edu.eg.ORCID http://orcid.org/0000-0002-6764-4148
Mohammed IbrahimDepartment of Orthopaedics and Trauma Surgery, Assiut University Hospitals, Assiut, 71515, Egypt.
Abdelkhalek Hafez IbrahimDepartment of Orthopaedics and Trauma Surgery, Assiut University Hospitals, Assiut, 71515, Egypt.
Nariman Abol OyounDepartment of Orthopaedics and Trauma Surgery, Assiut University Hospitals, Assiut, 71515, Egypt.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSlipped capital femoral epiphysis (SCFE) is a unique clinical entity, and many studies in the past few years have attempted to elucidate its natural history and ideal treatment. The modified Dunn procedure is one of its most widely accepted treatment options. However, the development of avascular necrosis (AVN) remains an issue of great concern. The main aim of this study was to identify the relationship between slip stability and the development of AVN after surgical hip dislocation through the modified Dunn procedure.

methodsA systematic review was conducted according to the PRISMA guidelines. A literature search was performed using the PubMed and Scopus databases with MeSH terms and free text forms. The articles were screened against the preselected criteria, and the ultimately included articles were included in the systematic review. Finally, a meta-analysis was conducted to compare the incidence of AVN between stable and unstable SCFE patients.

resultsBased on the inclusion and exclusion criteria, 12 articles were ultimately included in the systematic review, with nine articles eligible for quantitative analysis. Overall, the articles included 532 hips. Only 55 hips developed AVN, with an overall incidence of 10.3%. Among the 55 hips, 18 (32.7%) were stable, and 37 (67.3%) were unstable. Overall, the articles showed a low risk of bias (ROB); however, three articles showed a lack of proper reporting of the patients’ demographics, and one article showed a lack of clear reporting of the clinical information of the study population. The meta-analysis showed that the risk of developing AVN had a cumulative odds ratio (OR) of 0.33 (95% confidence interval 0.11–1.04), with an insignificant effect size of 1.9. (p = 0.06)

conclusionThe development of AVN after surgery remains a multifactorial process, and the procedure remains a reliable option for the treatment of both stable and unstable SCFE in the hands of experienced surgeons with an overall low risk of AVN.

trial registrationThe Study is registered on the PROSPERO registry, Study ID: CRD42022374768.

Indexed as

Femur Head NecrosisOrthopedic ProceduresPostoperative ComplicationsSlipped Capital Femoral EpiphysesHumansRisk FactorsTreatment OutcomeAVNLoder classificationModified dunn procedureSCFE

Identifiers

PMID41402796
PMCPMC12709695

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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.