Evidence map›Paper›PMID 27515303›Full record

ArticleSurgical and radiologic anatomy : SRA2017

Anatomic variations of levator scapulae in a normal cohort: an MRI study.

John Au, Alexandra L Webb, Graham Buirski, Paul N Smith, Mark R Pickering, Diana M Perriman

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Article in Surgical and radiologic anatomy : SRA, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.3field-weighted citation impact, top 33% 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

3 citing papers in PubMed, 7 citations in OpenAlex.

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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

6 authors at 2 institutions in 2 countries.

John AuTrauma and Orthopaedic Research Unit, Canberra Hospital, Canberra, Australia. u4937621@anu.edu.au.ORCID http://orcid.org/0000-0002-6332-5262
Alexandra L WebbANU Medical School, Australian National University, Florey Building, 54 Mills Road, Canberra, ACT, 2601, Australia.
Graham BuirskiANU Medical School, Australian National University, Florey Building, 54 Mills Road, Canberra, ACT, 2601, Australia.
Paul N SmithTrauma and Orthopaedic Research Unit, Canberra Hospital, Canberra, Australia.
Mark R PickeringSchool of Engineering and Information Technology, Australian Defence Force Academy, University of New South Wales, Canberra, Australia.
Diana M PerrimanTrauma and Orthopaedic Research Unit, Canberra Hospital, Canberra, Australia.
Australian National University · AUUNSW Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeAccessory attachments of the levator scapulae (LS) muscle have been described in the literature in previous cadaveric studies, but there is little knowledge about the incidence and distribution. Knowledge of LS accessory attachments is relevant to clinicians working in the fields of radiology, surgery, neurology, and musculoskeletal medicine. The purpose of this study was to explore the incidence and spectrum of LS caudal accessory attachments in vivo using magnetic resonance (MR) imaging in a young cohort.

methodsMR images of the cervical spine were obtained from 37 subjects (13 males and 24 females) aged 18-36 years using an axial T1-weighted spin echo sequence acquired from a 3-Tesla MR scanner. The LS muscle was identified, and the presence of caudal accessory attachments was recorded and described.

resultsLS caudal accessory attachments were identified in 16 subjects (4 right, 6 left, and 6 bilateral; 12 female). Ten had unilateral accessory attachments to the serratus anterior, serratus posterior superior or the first/second rib. Four had bilateral accessory attachments to serratus anterior. One had bilateral accessory attachments to serratus posterior superior and unilateral accessory attachment to serratus anterior. One had bilateral attachments to both muscles.

conclusionsBoth unilateral and bilateral LS caudal accessory attachments were present in nearly half of the subjects examined. They were relatively more frequent in females than males. The findings indicate that these accessory attachments are common, and in some cases, those accessory attachments can occur bilaterally and to more than one site.

Indexed as

Anatomic VariationAdolescentAdultCervical VertebraeFemaleHumansIncidenceMagnetic Resonance ImagingMaleProspective StudiesSex FactorsSuperficial Back MusclesYoung AdultAccessory attachmentAnatomic variationLevator scapulaeMagnetic resonance imagingRadiologySurgery

Identifiers

PMID27515303
OpenAlexW2513498366

What OpenQuestion holds

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Registered trials

None linked

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.