ArticleSurgical and radiologic anatomy : SRA2018
The prevalence and characteristics of the subclavius posticus muscle in the adult population on MRI.
Article in Surgical and radiologic anatomy : SRA, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it, 9 citations in OpenAlex.
- Muscles variations with topographical relationship to the suprascapular notch and its potential arthroscopic feasibility.Surgical and radiologic anatomy : SRA · 2025Pooled it
- Venous thoracic outlet syndrome in a patient with an aberrant subclavius posticus muscle: a case report.Surgical and radiologic anatomy : SRA · 2026Article
- Identification of a Musculus Levator Claviculae on Physical Exam: A Case Report and Literature Review.Diagnostics (Basel, Switzerland) · 2025Article
- Congenital, Acquired, and Trauma-Related Risk Factors for Thoracic Outlet Syndrome-Review of the Literature.Journal of clinical medicine · 2023Review
- Paralysis of the Upper Extremity Due to Acute Thoracic Outlet Syndrome Caused by the Subclavius Posticus Muscle: A Case Report With Literature Review.Korean journal of neurotrauma · 2022Article
- Bilateral absence of subclavius muscles with thickened costocoracoid ligaments: a case report with the clinical-anatomical correlation.Anatomy & cell biology · 2022Article
- Scalenus muscle and the C5 root of the brachial plexus: bilateral anatomical variation and its clinical significance.The Journal of the Canadian Chiropractic Association · 2021Article
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe subclavius posticus muscle (SPM) is an aberrant muscle, and the presence of the SPM has a clinical significance, since the SPM might lead to thoracic outlet syndrome (TOS). To date, no radiological study has been evaluated the prevalence of the SPM in the adult population. In this study, we aimed to assess the prevalence of the SPM using magnetic resonance imaging (MRI).
methodsWe retrospectively reviewed brachial plexus, neck, and thoracic MRI of the patients who underwent MRI for various pathologies. Only the patients whose MRI examinations did not have sufficient image quality and the patients who had any pathology that directly involved the thoracic outlet region were excluded from the study. The observers assessed images in the coronal plane to detect the presence of the SPM. The thickness of the muscle and the distance between the SPM and brachial plexus were also noted.
resultsMRI examinations of 350 patients, 174 males and 176 females, were evaluated. SPM was detected in 29 patients (8.3%). In 6 patients (1.7%), we identified bilateral SPM. The mean thickness of the muscle was 6.10 ± 1.60 mm (range 2.5-10 mm). In 21 sides (60%), the brachial plexus and SPM were touching each other. In the remaining 14 sides (40%), the mean distances between the SPM and brachial plexus were 2.32 ± 0.62 mm (range from 1.7 to 3.6 mm).
conclusionsWe conducted the first radiological study that evaluated the prevalence of the SPM, and we also assessed the thickness of the SPM and the distance between the SPM and brachial plexus. We highlight that our study might be accounted as a first step for future studies to assess the role of the SPM in TOS.
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