Evidence map›Paper›PMID 29354295›Full record

ArticleAnatomy & cell biology2017

Morphological classification and comparison of suboccipital muscle fiber characteristics.

Masato Yamauchi, Masahito Yamamoto, Kei Kitamura, Sumiharu Morita, Ryotaro Nagakura, Satoru Matsunaga, Shinichi Abe

Open access · greenAbstract read
In one paragraph

Article in Anatomy & cell biology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
0.7field-weighted citation impact, top 27% 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

14 citing papers in PubMed, 24 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Variations of the rectus capitis posterior muscles: a case report.Surgical and radiologic anatomy : SRA · 2024
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Upper cervical spine dysfunction and dizziness.Journal of exercise rehabilitation · 2020
    Review
  14. Article
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 at 1 institution in 1 country.

Masato YamauchiDepartment of Anatomy, Tokyo Dental College, Tokyo, Japan.
Masahito YamamotoDepartment of Anatomy, Tokyo Dental College, Tokyo, Japan.
Kei KitamuraDepartment of Histology and Developmental Biology, Tokyo Dental College, Tokyo, Japan.
Sumiharu MoritaDepartment of Anatomy, Tokyo Dental College, Tokyo, Japan.
Ryotaro NagakuraDepartment of Anatomy, Tokyo Dental College, Tokyo, Japan.
Satoru MatsunagaDepartment of Anatomy, Tokyo Dental College, Tokyo, Japan.
Shinichi AbeDepartment of Anatomy, Tokyo Dental College, Tokyo, Japan.
Tokyo Dental College · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In an attempt to clarify the function of the suboccipital muscles, we performed morphological observation of the suboccipital muscles for variations in the muscle belly and compared the morphology of their muscle fibers in terms of cross-sectional area by immunostaining with anti-myosin heavy chain antibodies. The cadavers of 25 Japanese individuals were used: 22 for morphological examinations and three for histological examinations. Among samples of the rectus capitis posterior major muscle (RCPma) and rectus capitis posterior minor muscle (RCPmi), 86.4% had a typical muscle appearance with a single belly, and 13.6% had an anomalous morphology. None of the samples of the obliquus capitis superior (OCS) or obliquus capitis inferior (OCI) muscles had an anomalous appearance. Measurement of cross-sectional area revealed that fast-twitch muscle fibers in the RCPma and OCI had a significantly greater cross-sectional area than those of the RCPmi and OCS. The cross-sectional area of intermediate muscle fibers was also significantly greater in the OCS than in the RCPma, RCPmi, and OCI. The cross-sectional area of slow-twitch muscle fibers was significantly greater in the OCS than in the RCPma, RCPmi, and OCI, and the RCPmi showed a significantly greater cross-sectional area for slow-twitch muscle fibers than did the RCPma, and OCI. Our findings indicate that the RCPmi and OCS exert a greater force than the RCPma and OCI, and act as anti-gravity agonist muscles of the head. Prolonged head extension in individuals with anomalous suboccipital muscle groups could result in dysfunction due to undue stress.

Indexed as

DysfunctionHeadacheMuscle fiber characteristicsSuboccipital musclesVariation

Identifiers

PMID29354295
PMCPMC5768560
OpenAlexW2783253748

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.