Evidence map›Paper›PMID 33411053›Full record

ArticleEuropean radiology2021

The Lisbon Agreement on Femoroacetabular Impingement Imaging-part 3: imaging techniques.

Miguel O Castro, Vasco V Mascarenhas, P Diana Afonso, Paulo Rego, Florian Schmaranzer, Reto Sutter, Ara Kassarjian, Luca Sconfienza, Michael Dienst, Olufemi R Ayeni and 21 more

Abstract read
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In one paragraph

Article in European radiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
–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

15 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Guideline
  2. Review
  3. [Imaging in hip disorders in childhood and adolescence].Orthopadie (Heidelberg, Germany) · 2026
    Review
  4. Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. [Femoroacetabular impingement in adolescents].Radiologie (Heidelberg, Germany) · 2023
    Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. 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

31 authors.

Miguel O CastroDepartment of Radiology, Centro Hospitalar Universitário do Algarve, Sítio do Poço Seco, Portimão, 8500-338, Portugal. migkastro@yahoo.com.ORCID http://orcid.org/0000-0002-1073-0168
Vasco V MascarenhasMusculoskeletal Imaging Unit, Radiology Department, Hospital da Luz, Grupo Luz Saúde, Lisbon, Portugal.
P Diana AfonsoMusculoskeletal Imaging Unit, Radiology Department, Hospital da Luz, Grupo Luz Saúde, Lisbon, Portugal.
Paulo RegoDepartment of Orthopaedic Surgery, Hospital da Luz, Lisbon, Portugal.
Florian SchmaranzerDepartment of Diagnostic, Interventional and Pediatric Radiology, Inselspital, Bern, University of Bern, Bern, Switzerland.
Reto SutterBalgrist University Hospital, University of Zurich, Zurich, Switzerland.
Ara KassarjianElite Sports Imaging, SL, Madrid, Spain.
Luca SconfienzaRCCS Istituto Ortopedico Galeazzi, Milan, Italy.
Michael DienstOrthopädische Chirurgie München, München, Germany.
Olufemi R AyeniDivision of Orthopaedic Surgery, McMaster University, Hamilton, Ontario, Canada.
Paul E BeauléDivision of Orthopaedic Surgery, University of Ottawa, Ottawa, Ontario, Canada.
Pedro DantasHospital CUF Descobertas, Lisbon, Portugal.
Radhesh LalamThe Robert Jones and Agnes Hunt Orthopaedic Hospital NHS Foundation Trust, Gobowen, Oswestry, UK.
Marc-André WeberInstitute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Center, Rostock, Germany.
Filip M VanhoenackerDepartment of Radiology, Antwerp University Hospital, Edegem, Belgium.
Tobias Johannes DietrichRadiology and Nuclear Medicine, Kantonsspital St. Gallen, Gallen, Switzerland.
Lennart JansDepartment of Radiology, Ghent University Hospital, Ghent, Belgium.
Philip RobinsonRadiology Department, Leeds Teaching Hospitals, Chapel Allerton Hospital, Leeds, UK.
Apostolos H KarantanasMedical School-University of Crete and Computational BioMedicine Laboratory-ICS/FORTH, Heraklion, Greece.
Iwona Sudoł-SzopińskaDepartment of Radiology, National Institute of Geriatrics, Rheumatology and Rehabilitation (NIGRiR), Warsaw, Poland.
Suzanne AndersonInstitute of Radiology, Kantonsspital Baden, Baden, Switzerland.
Iris Noebauer-HuhmannDepartment of Biomedical Imaging and Image Guided Therapy, Medical University of Vienna, Vienna, Austria.
Oliver Marin-PeñaOrthopedic and Traumatology Department, Hip Unit, University Hospital Infanta Leonor, Madrid, Spain.
Diego ColladoCirugía Ortopédica y Traumatología, Centro Médico Teknon, Barcelona, Spain.
Marc Tey-PonsOrthopedic Surgery and Traumatology, University Hospital del Mar, Barcelona, Spain.
Ehrenfried SchmaranzerDepartment of Radiology, District Hospital St. Johann, Tyrol, Austria.
Mario PadronDepartment of Radiology, Clínica Cemtro, Madrid, Spain.
Josef KramerRöntgeninstitut am Schillerpark, Rainerstrasse, Linz, Austria.
Patrick O ZinggDepartment of Orthopaedics, Balgrist University Hospital, Zurich, Switzerland.
Michel De MaeseneerUniversitair Ziekenhuis Brussel, Brussels, Belgium.
Eva LlopisDepartment of Radiology, Hospital de la Ribera, Valencia, Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesImaging diagnosis of femoroacetabular impingement (FAI) remains controversial due to a lack of high-level evidence, leading to significant variability in patient management. Optimizing protocols and technical details is essential in FAI imaging, although challenging in clinical practice. The purpose of this agreement is to establish expert-based statements on FAI imaging, using formal consensus techniques driven by relevant literature review. Recommendations on the selection and use of imaging techniques for FAI assessment, as well as guidance on relevant radiographic and MRI classifications, are provided.

methodsThe Delphi method was used to assess agreement and derive consensus among 30 panel members (musculoskeletal radiologists and orthopedic surgeons). Forty-four questions were agreed on and classified into five major topics and recent relevant literature was circulated, in order to produce answering statements. The level of evidence was assessed for all statements and panel members scored their level of agreement with each statement during 4 Delphi rounds. Either "group consensus," "group agreement," or "no agreement" was achieved.

resultsForty-seven statements were generated and group consensus was reached for 45. Twenty-two statements pertaining to "Imaging techniques" were generated. Eight statements on "Radiographic assessment" and 12 statements on "MRI evaluation" gained consensus. No agreement was reached for the 2 "Ultrasound" related statements.

conclusionThe first international consensus on FAI imaging was developed. Researchers and clinicians working with FAI and hip-related pain may use these recommendations to guide, develop, and implement comprehensive, evidence-based imaging protocols and classifications. KEY POINTS: • Radiographic evaluation is recommended for the initial assessment of FAI, while MRI with a dedicated protocol is the gold standard imaging technique for the comprehensive evaluation of this condition. • The MRI protocol for FAI evaluation should include unilateral small FOV with radial imaging, femoral torsion assessment, and a fluid sensitive sequence covering the whole pelvis. • The definite role of other imaging methods in FAI, such as ultrasound or CT, is still not well defined.

Indexed as

Femoracetabular ImpingementConsensusHipHip JointHumansMagnetic Resonance ImagingDelphi techniqueFemoroacetabular impingementGuidelinesHipMultimodal Imaging

Identifiers

What OpenQuestion holds

Textmetadata
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.