Evidence map›Paper›PMID 29460072›Full record

ArticleEuropean radiology2018

New MRI muscle classification systems and associations with return to sport after acute hamstring injuries: a prospective study.

Arnlaug Wangensteen, Ali Guermazi, Johannes L Tol, Frank W Roemer, Bruce Hamilton, Juan-Manuel Alonso, Rodney Whiteley, Roald Bahr

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Article in European radiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 3 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

23 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  14. Traumatic muscle injury.Nature reviews. Disease primers · 2023
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  16. [Imaging of muscle injuries in sports medicine].Radiologie (Heidelberg, Germany) · 2023
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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

8 authors.

Arnlaug WangensteenAspetar Orthopaedic and Sports Medicine Hospital, PO Box 29222, Doha, Qatar. arnlaug.wangensteen@nih.no.
Ali GuermaziQuantitative Imaging Centre, Department of Radiology, Boston University School of Medicine, Boston, MA, USA.
Johannes L TolAspetar Orthopaedic and Sports Medicine Hospital, PO Box 29222, Doha, Qatar. Johannes.tol@aspetar.com.
Frank W RoemerQuantitative Imaging Centre, Department of Radiology, Boston University School of Medicine, Boston, MA, USA.
Bruce HamiltonHigh Performance Sport NZ, Millennium Institute of Sport and Health, Mairangi Bay, Auckland, New Zealand.
Juan-Manuel AlonsoAspetar Orthopaedic and Sports Medicine Hospital, PO Box 29222, Doha, Qatar.
Rodney WhiteleyAspetar Orthopaedic and Sports Medicine Hospital, PO Box 29222, Doha, Qatar.
Roald BahrAspetar Orthopaedic and Sports Medicine Hospital, PO Box 29222, Doha, Qatar.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo determine agreement between modified Peetrons, Chan acute muscle strain injury classification and British Athletics Muscle Injury Classification (BAMIC) and to investigate their associations and ability to predict time to return to sport (RTS).

methodsMale athletes (n=176) with acute hamstring injury and MRI (1.5T) ≤5 days were followed until RTS. MRIs were scored using standardised forms.

resultsFor MRI-positive injuries there was moderate agreement in severity grading (κ = 0.50-0.56). Substantial variance in RTS was demonstrated within and between MRI categories. Mean differences showed an overall main effect for severity grading (p < 0.001), but post hoc pairwise comparisons for BAMIC (grade 0a/b vs. 1, p = 0.312; 1 vs 2, p = 0.054; 0a/b vs 2, p < 0.001; 1 vs 3, p < 0.001) and mean differences for anatomical sites (BAMIC a-c, p < 0.001 [a vs b, p = 0.974; a vs c, p = 0.065; b vs c, p = 0.007]; Chan anatomical sites 1-5, p < 0.077; 2A-C, p = 0.373; 2a-e, p = 0.008; combined BAMIC, p < 0.001) varied. For MRI-positive injuries, total explained RTS variance was 7.6-11.9% for severity grading and BAMIC anatomical sites.

conclusionsThere was wide overlap between/variation within the grading/classification categories. Therefore, none of the classification systems could be used to predict RTS in our sample of MRI-positive hamstring injuries. KEY POINTS: • Days to RTS varied greatly within the grading and classification categories. • Days to RTS varied greatly between the grading and classification categories. • Using MRI classification systems alone to predict RTS cannot be recommended. • The specific MRI classification used should be reported to avoid miscommunication.

Indexed as

Acute DiseaseAdolescentAdultAthletesAthletic InjuriesHamstring MusclesHumansMagnetic Resonance ImagingMaleMiddle AgedProspective StudiesReturn to SportSeverity of Illness IndexYoung AdultClassificationHamstring injuryMagnetic resonance imagingRadiological gradingReturn to sport

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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.