Evidence map›Paper›PMID 29687149›Full record

ArticleSkeletal radiology2018

Shoulder muscle volume and fat content in healthy adult volunteers: quantification with DIXON MRI to determine the influence of demographics and handedness.

Pascal S Kälin, Rebecca J Crawford, Magda Marcon, Andrei Manoliu, Samy Bouaicha, Michael A Fischer, Erika J Ulbrich

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In one paragraph

Article in Skeletal radiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

17 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

7 authors.

Pascal S KälinDepartment of Radiology, University Hospital and University of Zurich, Ramistrasse 100, 8091, Zurich, Switzerland. pascal.kaelin@usz.ch.ORCID http://orcid.org/0000-0003-2570-5034
Rebecca J CrawfordCentre for Health Sciences, Zurich University of Applied Sciences, Winterthur, Switzerland.
Magda MarconDepartment of Radiology, University Hospital and University of Zurich, Ramistrasse 100, 8091, Zurich, Switzerland.
Andrei ManoliuDepartment of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Zurich, Switzerland.
Samy BouaichaDepartment of Orthopedics, University Hospital Balgrist and University of Zurich, Zurich, Switzerland.
Michael A FischerMedical Radiological Institute (MRI), Zurich, Switzerland.
Erika J UlbrichDepartment of Radiology, University Hospital and University of Zurich, Ramistrasse 100, 8091, Zurich, Switzerland.

Funding

Research Time for clinical research at the Medical Faculty of University Zurich Grant number: RT-13-014
6 · The paper itself

Abstract

objectiveWe aimed to provide mean values for fat-fraction and volume for full-length bilateral rotator cuff and deltoid muscles in asymptomatic adults selected on the basis of their good musculoskeletal and systemic health, and to understand the influence of gender, age, and arm dominance. MATERIALS AND

methodsSeventy-six volunteers aged 20 to 60 years who were screened for normal BMI and high general health were included in the study. MRI was performed at 3 Tesla using three-point DIXON sequences. Volume and fat-signal fraction of the rotator cuff muscles and the deltoid muscle were determined with semi-automated segmentation of entire muscle lengths. Differences according to age, gender, and handedness per muscle were evaluated.

resultsFat-signal fractions were comparable between genders (mean ± 2 SD, 95% CI, women 7.0 ± 3.0; 6.8-7.2%, men 6.8 ± 2.7; 6.7-7.0%) but did not show convincing changes with age. Higher shoulder muscle volume and lower fat-signal fraction in the dominant arm were shown for teres minor and deltoid (p < 0.01) with similar trends shown for the other rotator cuff muscles.

conclusionsBilateral fat-signal fractions and volumes based on entire length shoulder muscles in asymptomatic 20-60 year old adults may provide reference for clinicians. Differences shown according to arm dominance should be considered and may rationalize the need for bilateral imaging in determining appropriate management.

Indexed as

Adipose TissueAdultAge FactorsCross-Sectional StudiesDeltoid MuscleFemaleFunctional LateralityHealthy VolunteersHumansMagnetic Resonance ImagingMaleMiddle AgedProspective StudiesRotator CuffRotator Cuff InjuriesShoulderFatty infiltrationHealthy adultsMRIMuscle volumeRotator cuff

Identifiers

PMID29687149

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.