Subclavius posticus muscle
Citation, DOI, disclosures and article data
Citation:
Knipe H, Bell D, Subclavius posticus muscle. Reference article, Radiopaedia.org (Accessed on 15 Nov 2024) https://doi.org/10.53347/rID-31897
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rID:
31897
Article created:
Disclosures:
At the time the article was created Henry Knipe had no recorded disclosures.
View Henry Knipe's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Daniel J Bell had no recorded disclosures.
View Daniel J Bell's current disclosures
Revisions:
2 times, by
2 contributors -
see full revision history and disclosures
Systems:
Sections:
Synonyms:
- Subclavius posticus muscles
Subclavius posticus muscle is an accessory muscle in the root of the neck, lying between the subclavius muscle and the inferior belly of omohyoid. It has an incidence of ~ 7.5% 2,4.
On this page:
Summary
- origin: first costal cartilage
- insertion: superior margin of scapula
- nerve supply: nerve to subclavius or suprascapular nerve
Relations
- inferiorly: subclavian vessels, brachial plexus
Differential diagnosis
- duplicated inferior belly of omohyoid muscle
Related pathology
Subclavius posticus may be associated with:
References
- 1. Akita K, Ibukuro K, Yamaguchi K et-al. The subclavius posticus muscle: a factor in arterial, venous or brachial plexus compression?. Surg Radiol Anat. 2000;22 (2): 111-5. Pubmed citation
- 2. Forcada P, Rodríguez-Niedenführ M, Llusá M et-al. Subclavius posticus muscle: supernumerary muscle as a potential cause for thoracic outlet syndrome. Clin Anat. 2001;14 (1): 55-7. doi:10.1002/1098-2353(200101)14:1<55::AID-CA1010>3.0.CO;2-Y - Pubmed citation
- 3. Singhal, Suruchi, V. Rao, and K. Y. Manjunath. "Subclavius posticus muscle—a case report." Int J Morphol 26.4 (2008): 813-5.
- 4. Shetty, R., et al. "The subclavius posticus muscle: its phylogenetic retention and clinical relevance." Int. J. Morphol 24.4 (2006): 599-600.
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