Evidence map›Paper›PMID 40314755›Full record

ArticlePediatric radiology2025

Knee-ultrasound: reference values for the amount of joint fluid and synovial appearances in healthy children and adolescents.

Sílvia Costa Dias, Diogo Costa Carvalho, Miguel Castro, Cláudia Camila Dias, Isabel Ramos, Iva Brito, Karen Rosendahl

Abstract read
In one paragraph

Article in Pediatric radiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

4 citing papers in PubMed.

  1. Article
  2. [Study on the effect of superficial layer damage on cartilage retention performance].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2026
    Article
  3. Review
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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

7 authors.

Sílvia Costa DiasFaculty of Medicine of the University of Porto, Rua Pedro Hispano nº 190, 2º Dto, Porto, 4100-393, Portugal. silvia.dias@ulssjoao.min-saude.pt.ORCID 0000-0003-0862-6967
Diogo Costa CarvalhoRadiology Department, University Hospital Center of São João Porto, Porto, Portugal.ORCID 0000-0001-7637-9756
Miguel CastroRadiology Department, University Hospital Center of São João Porto, Porto, Portugal.ORCID 0000-0003-2956-4232
Cláudia Camila DiasKnowledge Management Unit, Faculty of Medicine of the University of Porto, Porto, Portugal.ORCID 0000-0001-9356-3272
Isabel RamosFaculty of Medicine of the University of Porto, Rua Pedro Hispano nº 190, 2º Dto, Porto, 4100-393, Portugal.ORCID 0000-0002-5007-3000
Iva BritoFaculty of Medicine of the University of Porto, Rua Pedro Hispano nº 190, 2º Dto, Porto, 4100-393, Portugal.ORCID 0000-0001-9821-6405
Karen RosendahlDepartment of Clinical Medicine, Faculty of Health Sciences, UiT the Arctic University of Norway, Tromsø, Norway.ORCID 0000-0002-0135-2169

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWith increasing ultrasound use, data for the normal amount of joint fluid and synovial appearances are needed.

objectiveTo establish reference values for knee-ultrasound in healthy volunteers by age. To examine the association of joint fluid and synovial appearances with age, sex, and time spent in sports activities. MATERIALS AND

methodsProspective, cross-sectional, including 3-17-year-old volunteers. Examinations were performed by one of two experienced radiologists after meticulous standardisation of the technique. Knees were examined in 30° flexion, in extension and during provocation.

resultsOne hundred twenty-seven volunteers (67 females), median age 10.9 years (percentile 2.5

conclusionThe majority of healthy children have measurable knee joint fluid, more so when examined with a flexed knee and under provocation. Speckles within the joint fluid are seen in one-fourth, especially in males, and the presence of speckles and joint fluid amount are associated with sports-activity.

Indexed as

Knee JointSynovial FluidSynovial MembraneAdolescentChildChild, PreschoolCross-Sectional StudiesFemaleHumansMaleProspective StudiesReference ValuesReproducibility of ResultsUltrasonographyKneeMusculoskeletal ultrasoundSuprapatellar recessSynovial fluidSynovial membrane

Identifiers

PMID40314755
PMCPMC12119740

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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.