Evidence map›Paper›PMID 31768700›Full record

ArticleSurgical and radiologic anatomy : SRA2020

Variation of the sternocleidomastoid muscle: a case report of three heads and an accessory head.

Yu-Ran Heo, Jong-Wan Kim, Jae-Ho Lee

Abstract readCase Reports
PubMed Publisher
In one paragraph

Article in Surgical and radiologic anatomy : SRA, 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
0.9field-weighted citation impact, top 24% 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

5 citing papers in PubMed, 11 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Sternocleidomastoid muscle can have multiple attachments.Surgical and radiologic anatomy : SRA · 2020
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Yu-Ran HeoDepartment of Anatomy, Keimyung University School of Medicine, 2800, Dalgubeoldaero, Dalseo-Gu, Daegu, Republic of Korea.
Jong-Wan KimDepartment of Anatomy, Keimyung University School of Medicine, 2800, Dalgubeoldaero, Dalseo-Gu, Daegu, Republic of Korea.
Jae-Ho LeeDepartment of Anatomy, Keimyung University School of Medicine, 2800, Dalgubeoldaero, Dalseo-Gu, Daegu, Republic of Korea. anato82@dsmc.or.kr.ORCID http://orcid.org/0000-0002-5562-0720
Keimyung University · KR

Funding

Ministry of Education 2014R1A5A2010008
6 · The paper itself

Abstract

purposeAnatomical variations of the sternocleidomastoid muscle (SCM) have been observed to occupy multiple origins and insertion points and have supernumerary heads, sometimes varying in thickness.

methodsAn 85-year-old Korean male cadaver was dissected and a SMC with unilateral supernumerary heads was identified.

resultsThree heads and an accessory belly of the sternal head were recorded on the left side. There were two clavicular heads, one lateral and one medial. The sternal head originated inferior to the manubrium of the sternum. A small belly arose from the sternal head and merged to the lateral clavicular head on the C5 vertebrae level. These bellies inserted into the mastoid process of the temporal bone.

conclusionsThese variants may be problematic during surgical approaches to the upper neck and occipital, and should thus be appreciated by the clinician.

Indexed as

Anatomic VariationAged, 80 and overCadaverClavicleHumansMaleMastoidNeck MusclesSternumAnatomical variationMuscle variationSternocleidomastoidSupernumerary heads

Identifiers

PMID31768700
OpenAlexW2991243460

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.