Evidence map›Paper›PMID 35615396›Full record

ReviewJournal of children's orthopaedics2022

Is the modified Dunn's procedure superior to in situ fixation? A systematic review and meta-analysis of comparative studies for management of moderate and severe slipped capital femoral epiphysis.

Tim Cheok, Thomas Smith, Morgan Berman, Matthew Jennings, Kanishka Williams, Pradeep Mathew Poonnoose, Jaideep Rawat, Bruce Foster

Open access · goldAbstract readReview
In one paragraph

Review in Journal of children's orthopaedics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

7 citing papers in PubMed, 11 citations in OpenAlex.

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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

8 authors at 3 institutions in 1 country.

Tim CheokDepartment of Trauma and Orthopaedics, Alice Springs Hospital, Alice Springs, NT, Australia.
Thomas SmithDepartment of Trauma and Orthopaedics, Alice Springs Hospital, Alice Springs, NT, Australia.
Morgan BermanDepartment of Trauma and Orthopaedics, Alice Springs Hospital, Alice Springs, NT, Australia.
Matthew JenningsDepartment of Trauma and Orthopaedics, Alice Springs Hospital, Alice Springs, NT, Australia.
Kanishka WilliamsDepartment of Trauma and Orthopaedics, Alice Springs Hospital, Alice Springs, NT, Australia.
Pradeep Mathew PoonnooseDepartment of Trauma and Orthopaedics, Alice Springs Hospital, Alice Springs, NT, Australia.
Jaideep RawatDepartment of Trauma and Orthopaedics, Alice Springs Hospital, Alice Springs, NT, Australia.
Bruce FosterDepartment of Trauma and Orthopaedics, Alice Springs Hospital, Alice Springs, NT, Australia.
Alice Springs Hospital · AUFlinders Medical Centre · AUFlinders University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: The management of moderate and severe slipped capital femoral epiphysis is controversial. While in situ fixation is commonly used, the modified Dunn's procedure is increasingly popular within high-volume centers. We compared the clinical and radiological outcomes, as well as the rates of femoral head avascular necrosis or chondrolysis in patients managed with either modified Dunn's procedure or in situ fixation. Methods: A systematic search of the PubMed, Embase, The Cochrane Library, Science Direct, and Web of Science was performed in August 2021. Studies comparing outcomes and complications of modified Dunn's procedure versus in situ fixation in patients with moderate or severe slipped capital femoral epiphysis were included. Results: A total of four studies were included in the final analysis. Modified Dunn's procedure did not result in improved clinical outcomes. However, radiological outcomes as measured using Southwick angles and Alpha angles were significantly improved in the modified Dunn's procedure group, with a mean difference of -14.68 (p < 0.00001) and -34.26 degrees (p < 0.00001), respectively, compared to in situ fixation. There was no difference in the odds of femoral head avascular necrosis or chondrolysis, with odds ratio of 0.99 (p = 0.97). Conclusion: Within the limits of our study, modified Dunn's procedure did not improve clinical outcomes. There were significantly improved radiological outcomes without higher odds of femoral head avascular necrosis or chondrolysis. Further long-term studies are required to better guide management of moderate and severe slipped capital femoral epiphysis, especially in unstable slips. In the meantime, we recommend that the modified Dunn's procedure, if done, be restricted to high-volume centers with low complication rates. Level of evidence: Level III-Systematic review of Level III studies. Prospero Registration No: CRD42021279503.

Indexed as

in situ fixationmeta-analysismodified Dunn’s procedureSlipped capital femoral epiphysissystematic reviewtreatment

Identifiers

PMID35615396
PMCPMC9124911
OpenAlexW4226333981

What OpenQuestion holds

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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.