Evidence map›Paper›PMID 32979058›Full record

ArticleSurgical and radiologic anatomy : SRA2021

The co-occurrence of a four-headed coracobrachialis muscle, split coracoid process and tunnel for the median and musculocutaneous nerves: the potential clinical relevance of a very rare variation.

Łukasz Olewnik, Nicol Zielinska, Piotr Karauda, Fabrice Duparc, Georgi P Georgiev, Michał Polguj

Abstract readCase Reports
In one paragraph

Article in Surgical and radiologic anatomy : SRA, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

  1. Article
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  5. A very rare case of a thoracobrachialis muscle.Surgical and radiologic anatomy : SRA · 2023
    Article
  6. Article
  7. Review
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  9. Proportional localisation of the entry point of the coracobrachialis muscle by the musculocutaneous nerve along the humerus.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2023
    Article
  10. Article
  11. Article
  12. Article
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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.

Łukasz OlewnikDepartment of Anatomical Dissection and Donation, Medical University of Lodz, Lodz, Poland. lukasz.olewnik@umed.lodz.pl.ORCID http://orcid.org/0000-0002-6414-9504
Nicol ZielinskaDepartment of Anatomical Dissection and Donation, Medical University of Lodz, Lodz, Poland.
Piotr KaraudaDepartment of Anatomical Dissection and Donation, Medical University of Lodz, Lodz, Poland.
Fabrice DuparcLaboratory of Anatomy, Faculty of Medicine, Rouen University, Mont-Saint-Aignan, France.
Georgi P GeorgievDepartment of Orthopaedics and Traumatology, Medical University of Sofia, Sofia, Bulgaria.
Michał PolgujDepartment of Normal and Clinical Anatomy, Medical University of Lodz, Lodz, Poland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The coracobrachialis muscle (CBM) originates from the apex of the coracoid process, in common with the short head of the biceps brachii muscle, and from the intermuscular septum. Both the proximal and distal attachment of the CBM, as well as its relationship with the musculocutaneus nerve demonstrate morphological variability, some of which can lead to many diseases. The present case study presents a new description of a complex origin type (four-headed CBM), as well as the fusion of both the short biceps brachii head, brachialis muscle and medial head of the triceps brachii. In addition, the first and second heads formed a tunnel for the musculocutaneus and median nerves. This case report has clear clinical value due to the split mature of the coracoid process, and is a significant indicator of the development of interest in this overlooked muscle.

Indexed as

Anatomic VariationCadaverCoracoid ProcessFemaleHumansMedian NerveMiddle AgedMuscle, SkeletalMusculocutaneous NerveAnatomical variationsCoracobrachialis muscleMedian nerveMusculocutaneus nerveSplit coracoid

Identifiers

PMID32979058
PMCPMC8105253

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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.