Evidence map›Paper›PMID 33816640›Full record

ArticleOrthopaedic journal of sports medicine2021

Biochemical MRI With dGEMRIC Corresponds to 3D-CT Based Impingement Location for Detection of Acetabular Cartilage Damage in FAI Patients.

Till D Lerch, Dimitri Ambühl, Florian Schmaranzer, Inga A S Todorski, Simon D Steppacher, Markus S Hanke, Pascal C Haefeli, Emanuel F Liechti, Klaus A Siebenrock, Moritz Tannast

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Orthopaedic journal of sports medicine, 2021. 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
1.3field-weighted citation impact, top 21% 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

4 citing papers in PubMed, 9 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. What the papers say.Journal of hip preservation surgery · 2021
    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

10 authors at 2 institutions in 1 country.

Till D LerchDepartment of Orthopaedic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Dimitri AmbühlDepartment of Orthopaedic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Florian SchmaranzerDepartment of Orthopaedic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Inga A S TodorskiDepartment of Orthopaedic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Simon D SteppacherDepartment of Orthopaedic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Markus S HankeDepartment of Orthopaedic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Pascal C HaefeliDepartment of Orthopaedic Surgery, Lucerne Cantonal Hospital, Lucerne, Switzerland.
Emanuel F LiechtiDepartment of Orthopaedic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Klaus A SiebenrockDepartment of Orthopaedic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Moritz TannastDepartment of Orthopaedic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
University of Bern · CHUniversity Hospital of Bern · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnterior femoroacetabular impingement (FAI) is associated with labral tears and acetabular cartilage damage in athletic and young patients. Delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) is an imaging method for detecting early damage to cartilage. PURPOSE: We evaluated the following questions: (1) What is the sensitivity and specificity of morphological magnetic resonance imaging (MRI) and dGEMRIC for detecting cartilage damage? Do the mean acetabular and femoral dGEMRIC indices differ between (2) superior acetabular clock positions with and without impingement and (3) between cam- and pincer-type FAI? STUDY

designCohort study (diagnosis); Level of evidence, 2.

methodsThis was a retrospective comparative study of 21 hips (20 patients with symptomatic anterior FAI) without osteoarthritis on anteroposterior radiographs. Morphological MRI and dGEMRIC (3.0-T, 3-dimensional [3D] T1 maps, dual-flip angle technique) of the same hip joint were compared. Intraoperative acetabular cartilage damage was assessed in patients who underwent surgical treatment. Computed tomography (CT)-based 3D bone models of the same hip joint were used as the gold standard for the detection of impingement, and dGEMRIC indices and zones of morphologic damage were compared with the CT-based impingement zones.

resultsOf the 21 hips, 10 had cam-type FAI and 8 had pincer-type FAI according to radiographs. The mean age was 30 ± 9 years (range, 17-48 years), 71% were female, and surgical treatment was performed in 52%. We found a significantly higher sensitivity (69%) for dGEMRIC compared with morphological MRI (42%) in the detection of cartilage damage (

conclusionMRI with dGEMRIC was more sensitive than morphological MRI, and lower dGEMRIC values were found for clock positions with impingement as detected on 3D-CT. This could aid in patient-specific diagnosis of FAI, preoperative patient selection, and surgical decision making to identify patients with cartilage damage who are at risk for inferior outcomes after hip arthroscopy.

Indexed as

3D-CTdGEMRICFAIfemoroacetabular impingementhip arthroscopyhip preservation surgeryhip preserving surgery

Identifiers

PMID33816640
PMCPMC7988263
OpenAlexW3138888771

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.