Evidence map›Paper›PMID 30741344›Full record

ArticleEuropean radiology2019

Cam-type femoroacetabular impingement-correlations between alpha angle versus volumetric measurements and surgical findings.

Riham Dessouky, Avneesh Chhabra, Lihua Zhang, Adam Gleason, Rajiv Chopra, Yonatan Chatzinoff, Nicholas P Fey, Yin Xi, Joel Wells

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Article in European radiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
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9citing 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

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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

9 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Advances in FAI Imaging: a Focused Review.Current reviews in musculoskeletal medicine · 2020
    Review
  8. Article
  9. Article
4 · The record

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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

9 authors.

Riham DessoukyDepartment of Radiology, Zagazig University Hospitals and Faculty of Medicine, Zagazig University, Koliat Al Tob Street, Zagazig, 44519, Egypt.ORCID http://orcid.org/0000-0003-3345-1599
Avneesh ChhabraDepartment of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Lihua ZhangDepartment of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Adam GleasonDepartment of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Rajiv ChopraDepartment of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Yonatan ChatzinoffDepartment of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Nicholas P FeyDepartments of Bioengineering and Mechanical Engineering, The University of Texas at Dallas, Richardson, TX, USA.
Yin XiDepartment of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Joel WellsDepartment of Orthopedic Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA. Joel.Wells@utsouthwestern.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimDetermine correlations of 3DCT cam-type femoroacetabular impingement (FAI) measurements with surgical findings of labral tear and cartilage loss.

methodsDigital search of symptomatic cam-type FAI from July 2013 to August 2016 yielded 43 patients. Two readers calculated volumes of femoral head, bump, and alpha angles on 3DCT images. Correlations between CT and surgical findings, inter-, and intra-reader reliabilities were assessed using Spearman rank correlation and intraclass correlation coefficients (ICC).

resultsThirteen men and 14 women aged 37 ± 10 (mean ± SD) years were included. Most common clinical finding was positive flexion-adduction-internal rotation (70.4%). Twenty-seven labral tears and 20 cartilage defects were surgically detected. Significant correlations existed between femoral bump, head volumes, and extent of the labral tear (p = 0.008 and 0.003). No significant correlations were found between the alpha angles at 12 to 3 o'clock and the extent of labral tear (p = 0.2, 0.8, 0.9, and 0.09) or any measurement with the cartilage loss (p values for alpha 12 to 3, bump, and head volumes = 0.7, 0.3, 0.9, 0.9, 0.07, and 0.2). Inter- and intra-reader reliabilities were excellent to moderate for femoral head and bump volumes (ICC = 0.85, 0.52, and 0.8, 0.5) and moderate to poor for alpha angles (ICC = 0.48, 0.40, 0.05, 0.25 and 0.3, 0.24, 0.29, 0.49).

conclusionThree dimensional volumetric measurements of cam-type FAI significantly correlate with the extent of intraoperative labral tears. Superior inter- and intra-reader reliability to that of alpha angles renders it a more clinically relevant measurement for quantifying cam morphology. KEY POINTS: • The 3DCT bump volume and femoral head volume showed significant correlations with the extent of labral tear (p values = 0.008 and 0.003). • No significant correlations were seen between alpha angles and the extent of labral tear (p values > 0.05). • Inter- and intra-reader reliability was excellent to moderate (ICC = 0.85 and 0.52, 0.8, and 0.5) for femoral head and bump volumes while inter- and intra-reader reliability was fair to poor (ICC = 0.48, 0.40, 0.05, 0.25 and 0.3, 0.24, 0.29, 0.49) for alpha angles.

Indexed as

Imaging, Three-DimensionalAcetabulumAdultArthroscopyCross-Sectional StudiesFemaleFemoracetabular ImpingementFemur HeadHumansMaleReproducibility of ResultsRetrospective StudiesTomography, X-Ray ComputedComputer-assistedFemoroacetabular impingementHip jointImage processingTomography

Identifiers

PMID30741344

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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.