Evidence map›Paper›PMID 35360941›Full record

Trial reportThe bone & joint journal2022

The British Orthopaedic Surgery Surveillance study: Perthes' disease: the epidemiology and two-year outcomes from a prospective cohort in Great Britain.

Daniel C Perry, Barbara Arch, Duncan Appelbe, Priya Francis, Joanna Craven, Fergal P Monsell, Paula Williamson, Marian Knight, BOSS collaborators

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in The bone & joint journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Treatment for primary avascular necrosis of the lower limb in childhood.The Cochrane database of systematic reviews · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Observational
  9. Review
  10. Article
  11. 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

9 authors.

Daniel C PerryFaculty of Health and Life Sciences, University of Liverpool, Liverpool, UK.
Barbara ArchFaculty of Health and Life Sciences, University of Liverpool, Liverpool, UK.
Duncan AppelbeKadoorie Centre, Oxford Trauma and Emergency Care, NDORMS, University of Oxford, Oxford, UK.
Priya FrancisFaculty of Health and Life Sciences, University of Liverpool, Liverpool, UK.
Joanna CravenNorth West Trauma and Orthopaedic Surgery (Cheshire and Merseyside), Health Education England, Liverpool, UK.
Fergal P MonsellBristol Royal Hospital for Children, Bristol, UK.
Paula WilliamsonFaculty of Health and Life Sciences, University of Liverpool, Liverpool, UK.
Marian KnightNational Perinatal Epidemiology Unit, University of Oxford, Oxford, UK.
BOSS collaborators

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsThe aim of this study was to evaluate the epidemiology and treatment of Perthes' disease of the hip.

methodsThis was an anonymized comprehensive cohort study of Perthes' disease, with a nested consented cohort. A total of 143 of 144 hospitals treating children's hip disease in the UK participated over an 18-month period. Cases were cross-checked using a secondary independent reporting network of trainee surgeons to minimize those missing. Clinician-reported outcomes were collected until two years. Patient-reported outcome measures (PROMs) were collected for a subset of participants.

resultsOverall, 371 children (396 hips) were newly affected by Perthes' disease arising from 63 hospitals, with a median of two patients (interquartile range 1.0 to 5.5) per hospital. The annual incidence was 2.48 patients (95% confidence interval (CI) 2.20 to 2.76) per 100,000 zero- to 14-year-olds. Of these, 117 hips (36.4%) were treated surgically. There was considerable variation in the treatment strategy, and an optimized decision tree identified joint stiffness and age above eight years as the key determinants for containment surgery. A total of 348 hips (88.5%) had outcomes to two years, of which 227 were in the late reossification stage for which a hip shape outcome (Stulberg grade) was assigned. The independent predictors of a poorer radiological outcome were female sex (odds ratio (OR) 2.27 (95% CI 1.19 to 4.35)), age above six years (OR 2.62 (95% CI (1.30 to 5.28)), and over 50% radiological collapse at inclusion (OR 2.19 (95% CI 0.99 to 4.83)). Surgery had no effect on radiological outcomes (OR 1.03 (95% CI 0.55 to 1.96)). PROMs indicated the marked effect of the disease on the child, which persisted at two years.

conclusionDespite the frequency of containment surgery, we found no evidence of improved outcomes. There appears to be a sufficient case volume and community equipoise among surgeons to embark on a randomized clinical trial to definitively investigate the effectiveness of containment surgery. Cite this article:

Indexed as

Orthopedic ProceduresChildCohort StudiesFemaleFollow-Up StudiesHumansProspective StudiesTreatment OutcomeUnited KingdomAvascular necrosisBOSScliniciansCohortcohort studiesepidemiologyEpidemiologyhip diseasehipsIncidenceLegg-Calvé-PerthesLegg-calve-perthes diseaseorthopaedic surgeryOsteonecrosisPatient-reported outcome measures (PROMs)Perthesradiological outcomesrandomized controlled trials

Identifiers

PMID35360941
PMCPMC9020518

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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.