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ArticleEuropean radiology2024

Are degenerative findings detected on traction MR arthrography of the hip associated with failure of arthroscopic femoroacetabular impingement surgery?

Till D Lerch, Andreas K Nanavati, Alexander F Heimann, Malin K Meier, Simon D Steppacher, Moritz Wagner, Alexander Brunner, Peter Vavron, Ehrenfried Schmaranzer, Joseph M Schwab and 2 more

Open access · hybridAbstract read
In one paragraph

Article in European radiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

6 citing papers in PubMed, 13 citations in OpenAlex.

  1. Review
  2. Fossa-Foveolar Mismatch Is Highest in Dysplastic Hips and During External Rotation.Arthroscopy, sports medicine, and rehabilitation · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 3 institutions in 1 country.

Till D LerchDepartment of Diagnostic-, Interventional- and Pediatric Radiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland.
Andreas K NanavatiDepartment of Orthopaedic Surgery and Traumatology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland.
Alexander F HeimannDepartment of Orthopaedic Surgery and Traumatology, HFR - Cantonal Hospital, University of Fribourg, Chemin Des Pensionnats 2-6, 1700, Fribourg, Switzerland.
Malin K MeierDepartment of Orthopaedic Surgery and Traumatology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland.
Simon D SteppacherDepartment of Orthopaedic Surgery and Traumatology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland.
Moritz WagnerDepartment of Orthopaedic Surgery and Traumatology, District Hospital St. Johann in Tirol, Bahnhofstrasse 14, 6380, St. Johann in Tirol, Austria.
Alexander BrunnerDepartment of Orthopaedic Surgery and Traumatology, District Hospital St. Johann in Tirol, Bahnhofstrasse 14, 6380, St. Johann in Tirol, Austria.
Peter VavronDepartment of Orthopaedic Surgery and Traumatology, District Hospital St. Johann in Tirol, Bahnhofstrasse 14, 6380, St. Johann in Tirol, Austria.
Ehrenfried SchmaranzerDepartment of Radiology, District Hospital St. Johann in Tirol, Bahnhofstrasse 14, 6380, St. Johann in Tirol, Austria.
Joseph M SchwabDepartment of Orthopaedic Surgery and Traumatology, HFR - Cantonal Hospital, University of Fribourg, Chemin Des Pensionnats 2-6, 1700, Fribourg, Switzerland.
Moritz TannastDepartment of Orthopaedic Surgery and Traumatology, HFR - Cantonal Hospital, University of Fribourg, Chemin Des Pensionnats 2-6, 1700, Fribourg, Switzerland.
Florian SchmaranzerDepartment of Diagnostic-, Interventional- and Pediatric Radiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland. florian.schmaranzer@insel.ch.ORCID http://orcid.org/0000-0002-8729-7243
University of Bern · CHUniversity of Fribourg · CHUniversity of Zurich · CH

Funding

Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung 205091
6 · The paper itself

Abstract

objectivesTo identify preoperative degenerative features on traction MR arthrography associated with failure after arthroscopic femoroacetabular impingement (FAI) surgery.

methodsRetrospective study including 102 patients (107 hips) undergoing traction magnetic resonance arthrography (MRA) of the hip at 1.5 T and subsequent hip arthroscopic FAI surgery performed (01/2016 to 02/2020) with complete follow-up. Clinical outcomes were assessed using the International Hip Outcome Tool (iHOT-12) score. Clinical endpoint for failure was defined as an iHOT-12 of < 60 points or conversion to total hip arthroplasty. MR images were assessed by two radiologists for presence of 9 degenerative lesions including osseous, chondrolabral/ligamentum teres lesions. Uni- and multivariate Cox regression analysis was performed to assess the association between MRI findings and failure of FAI surgery.

resultsOf the 107 hips, 27 hips (25%) met at least one endpoint at a mean 3.7 ± 0.9 years follow-up. Osteophytic changes of femur or acetabulum (hazard ratio [HR] 2.5-5.0), acetabular cysts (HR 3.4) and extensive cartilage (HR 5.1) and labral damage (HR 5.5) > 2 h on the clockface were univariate risk factors (all p < 0.05) for failure. Three risk factors for failure were identified in multivariate analysis: Acetabular cartilage damage > 2 h on the clockface (HR 3.2, p = 0.01), central femoral osteophyte (HR 3.1, p = 0.02), and femoral cartilage damage with ligamentum teres damage (HR 3.0, p = 0.04).

conclusionJoint damage detected by preoperative traction MRA is associated with failure 4 years following arthroscopic FAI surgery and yields promise in preoperative risk stratification. CLINICAL RELEVANCE STATEMENT: Evaluation of negative predictors on preoperative traction MR arthrography holds the potential to improve risk stratification based on the already present joint degeneration ahead of FAI surgery. KEY POINTS: • Osteophytes, acetabular cysts, and extensive chondrolabral damage are risk factors for failure of FAI surgery. • Extensive acetabular cartilage damage, central femoral osteophytes, and combined femoral cartilage and ligamentum teres damage represent independent negative predictors. • Survival rates following hip arthroscopy progressively decrease with increasing prevalence of these three degenerative findings.

Indexed as

ArthroscopyFemoracetabular ImpingementMagnetic Resonance ImagingTractionTreatment FailureAdultArthrographyFemaleHip JointHumansMaleMiddle AgedRetrospective StudiesHipHip arthroscopyLabrumMR arthrographyMRI

Identifiers

PMID37982837
PMCPMC11166863
OpenAlexW4388834265

What OpenQuestion holds

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LicenceCC BY
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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.