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ID 32837
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Author
Murakami, Shinichiro
Horiuchi, Kanji
Yamamoto, Chugo
Murakami, Takuro
Abstract

A rare anomaly of the scalenus muscles is described. In this case, the right scalenus anterior muscle was absent. As a substitute for this muscle, some aberrant muscle slips arose from the lower vertebrae and descended in front of the ventral rami of the lower cervical nerves. These aberrant slips then ran between the ventral rami of the the eighth cervical and first thoracic nerves, and were fused with the right scalenus medius muscle. Thus, the subclavian artery and vein ran in front of the aberrant slips, together with the ventral ramus of the first thoracic nerve. The aberrant muscle slips issued 2 accessory bundles. One bundle ran between the ventral rami of the fourth and fifth cervical nerves and was fused with the scalenus medius muscle; the other bundle ran between the ventral rami of the fifth and sixth cervical nerves and was fused with the scalenus medius muscle.

Keywords
scalenus anterior muscle
scalenus medius muscle
ventral rami of the lower cervical nerves
ventral ramus of the first thoracic nerve
subclavian artery and vein
Amo Type
Article
Published Date
2003-06
Publication Title
Acta Medica Okayama
Volume
volume57
Issue
issue3
Publisher
Okayama University Medical School
Start Page
159
End Page
161
ISSN
0386-300X
NCID
AA00508441
Content Type
Journal Article
language
英語
File Version
publisher
Refereed
True
PubMed ID
Web of Sience KeyUT