Evidence map›Paper›PMID 35412896›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2022

Human shoulder development is adapted to obstetrical constraints.

Mikaze Kawada, Masato Nakatsukasa, Takeshi Nishimura, Akihisa Kaneko, Naomichi Ogihara, Shigehito Yamada, Walter Coudyzer, Christoph P E Zollikofer, Marcia S Ponce de León, Naoki Morimoto

Open access · greenAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

4 citing papers in PubMed, 6 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Pelvic shape change in adult Japanese macaques and implications for childbirth at old age.Proceedings of the National Academy of Sciences of the United States of America · 2023
    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

10 authors at 4 institutions in 3 countries.

Mikaze KawadaLaboratory of Physical Anthropology, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan.
Masato NakatsukasaLaboratory of Physical Anthropology, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan.ORCID 0000-0002-6897-8027
Takeshi NishimuraPrimate Research Institute, Kyoto University, 484-8506 Inuyama, Japan.ORCID 0000-0003-3800-2194
Akihisa KanekoPrimate Research Institute, Kyoto University, 484-8506 Inuyama, Japan.ORCID 0000-0003-3629-1658
Naomichi OgiharaDepartment of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan.
Shigehito YamadaCongenital Anomaly Research Center, Kyoto University Graduate School of Medicine, 606-8303 Kyoto, Japan.ORCID 0000-0002-8194-6927
Walter CoudyzerDepartment of Radiology, University Hospitals, Katholieke Universiteit Leuven, 3000 Leuven, Belgium.ORCID 0000-0002-6406-7496
Christoph P E ZollikoferAnthropological Institute and Museum, University of Zurich, 8057 Zurich, Switzerland.ORCID 0000-0003-2523-3700
Marcia S Ponce de LeónDepartment of Informatics, University of Zurich, 8050 Zurich, Switzerland.ORCID 0000-0003-2597-9852
Naoki MorimotoLaboratory of Physical Anthropology, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan.ORCID 0000-0002-8367-4777
Kyoto University · JPUniversity of Zurich · CHKU Leuven · BEThe University of Tokyo · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In humans, obstetrical difficulties arise from the large head and broad shoulders of the neonate relative to the maternal birth canal. Various characteristics of human cranial development, such as the relatively small head of neonates compared with adults and the delayed fusion of the metopic suture, have been suggested to reflect developmental adaptations to obstetrical constraints. On the other hand, it remains unknown whether the shoulders of humans also exhibit developmental features reflecting obstetrical adaptation. Here we address this question by tracking the development of shoulder width from fetal to adult stages in humans, chimpanzees, and Japanese macaques. Compared with nonhuman primates, shoulder development in humans follows a different trajectory, exhibiting reduced growth relative to trunk length before birth and enhanced growth after birth. This indicates that the perinatal developmental characteristics of the shoulders likely evolved to ease obstetrical difficulties such as shoulder dystocia in humans.

Indexed as

ShoulderShoulder DystociaAnimalsFemaleFetal DevelopmentHumansMacaca fuscataPan troglodytesParturitionPregnancyRiskchildbirthobstetrical dilemmaontogenetic allometryshoulder dystocia

Identifiers

PMID35412896
PMCPMC9169817
OpenAlexW4223530034

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.