Evidence map›Paper›PMID 32323031›Full record

ArticleMagma (New York, N.Y.)2020

MRI-based static and functional assessment of complex hip deformities in comparison with CT: a validation study.

Sophia Blum, Lea Franken, Albrecht Hartmann, Falk Thielemann, Verena Plodeck, Dirk Danowski, Jens-Peter Kühn, Ralf-Thorsten Hoffmann, Klaus-Peter Günther, Jens Goronzy

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Article in Magma (New York, N.Y.), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

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

5 citing papers in PubMed.

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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

10 authors.

Sophia BlumDepartment of Radiology, Institute and Policlinic of Diagnostic and Interventional Radiology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany. Sophia.Blum@uniklinikum-dresden.de.ORCID http://orcid.org/0000-0001-7096-5199
Lea FrankenUniversity Center of Orthopedics and Traumatology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
Albrecht HartmannUniversity Center of Orthopedics and Traumatology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
Falk ThielemannUniversity Center of Orthopedics and Traumatology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
Verena PlodeckDepartment of Radiology, Institute and Policlinic of Diagnostic and Interventional Radiology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
Dirk DanowskiDepartment of Radiology, Institute and Policlinic of Diagnostic and Interventional Radiology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
Jens-Peter KühnDepartment of Radiology, Institute and Policlinic of Diagnostic and Interventional Radiology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.ORCID http://orcid.org/0000-0003-3258-930X
Ralf-Thorsten HoffmannDepartment of Radiology, Institute and Policlinic of Diagnostic and Interventional Radiology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.ORCID http://orcid.org/0000-0003-3150-4263
Klaus-Peter GüntherUniversity Center of Orthopedics and Traumatology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
Jens GoronzyUniversity Center of Orthopedics and Traumatology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThis study aimed at investigating the agreement between predefined quantitative parameters of hip morphology derived from magnetic resonance imaging (MRI) and virtual range of motion (ROM) analysis using computed tomography (CT) as standard of reference.

methodsTwenty patients (13 females, 7 males, 16-59 years) with hip deformities underwent MRI prior to surgery. Clockwise alpha angle, femoral head and neck diameter, collum caput diaphysis angle, femoral torsion, center-edge angles, acetabular coverage of the femoral head, sourcil angle, and acetabular anteversion were measured. Additionally, tern single and combined movements were simulated using a motion analysis program. The MRI findings were compared with the corresponding results obtained by CT. Correlation of MRI with CT was assessed using different statistical methods (intraclass correlation coefficient, Bland-Altmann plot, two one-sided t test), and linear regression analysis was performed.

resultsThe results showed near-perfect intraclass correlation coefficients (ICCs) for anteversion (0.95), acetabular sector angles (0.98-0.99), sourcil angle (0.95), and acetabular coverage (anterior 0.96, posterior 0.99). Intermethod correlation for femoral parameters showed almost perfect agreement except for the alpha angle (0.73-0.97). No significant proportional bias was detected for traditional acetabular and femoral parameters. ROM analysis was performed for 370 movements in 37 hips. For 78.4% (290/370) of the movements analysed, neither CT nor MRI detected impingement across the physiological ROM. For 18.6% (69/370) of the movements, impingement was detected by both CT and MRI, while 2.2% (8/370) of the movements with impingement in CT showed no impingement in MRI, and 0.8% (3/370) of the movements with impingement in MRI had no corresponding result in CT.

conclusionFinally, it was concluded that MRI-based assessment of hip morphology and virtual ROM analysis is feasible and can be performed with good intermethod agreement in comparison to the gold standard (CT). Therefore, MRI appears to be substantially equivalent to CT for use in virtual ROM analysis and so may reasonably be used in place of CT for this purpose.

Indexed as

Femoracetabular ImpingementTomography, X-Ray ComputedFemaleHip JointHumansMagnetic Resonance ImagingMaleRetrospective StudiesAlpha angleAutomated ROM measurementFemoroacetabular impingementHip deformityMagnetic resonance imagingVirtual ROM measurements

Identifiers

PMID32323031
PMCPMC7669781

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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.