Illustrated Encyclopedia of Human Anatomic Variation: Opus II: Cardiovascular System: Arteries: Upper Limb
Ronald A. Bergman, PhD
Adel K. Afifi, MD, MS
Ryosuke Miyauchi, MD
Peer Review Status: Internally Peer Reviewed
This artery may arise from the thoracoacromial (6% of Poynter's series of 200 cadavers).
Occasionally, the subscapular arises from the second part of the axillary (15%), and it may also arise from the brachial.
Quite often it arises from a common trunk with one or both circumflex humeral arteries (15%).
It may arise as a branch from the lateral thoracic, posterior circumflex humeral, or profunda brachii.
The posterior circumflex humeral artery may arise from, or form a common trunk (15%) with, the subscapular artery. The posterior circumflex humeral artery is a branch of the subscapular in 10% and the profunda brachii in 2% of individuals.
In one documented case, the subscapular arose as a branch of the inferior thyroid.
Usually, the circumflex scapular precedes the thoracodorsal in branching order but in 12% the latter appears first. In 4% of Poynter's cases the circumfex scapular was a separate branch of the axillary artery.
The subscapular artery has a variety of origins:
|
1. Directly from the subclavian artery |
|
|
2. Directly from the axillary artery |
|
|
3. From the stem f the inferior thyroid artery |
|
|
4. From a common trunk with the superficial cervical artery |
|
|
5. From a common trunk with the superficial cervical and posterior (dorsal) scapular arteries |
|
|
6. From a common trunk with the dorsal scapular artery |
|
from Dubreuil-Chambardel, 1926
References
Bintot, -. (1827) Anomalie de l'sous-scapulaire. Bull. et Mém. de la Soc. Anatomique de Paris 1827:35.
Dubreuil-Chambardel, L. (1926) Variations des Artères du Membre Superieur. Masson et Cie, Paris.
Mauclaire, -. (1892) Anomalie de l'artère sus-scapulaire venant s'enrouler en 8 de chiffre dans le creux sous claviculaire. Bull. et Mém. de la Soc. Anatomique de Paris 1892:184.
See also references for the Supreme thoracic or Lateral thoracic arteries.
Section Top | Title Page
Please send us comments by filling out our Comment Form.
All contents copyright © 1995-2024 the Author(s) and Michael P. D'Alessandro, M.D. All rights reserved.
"Anatomy Atlases", the Anatomy Atlases logo, and "A digital library of anatomy information" are all Trademarks of Michael P. D'Alessandro, M.D.
Anatomy Atlases is funded in whole by Michael P. D'Alessandro, M.D. Advertising is not accepted.
Your personal information remains confidential and is not sold, leased, or given to any third party be they reliable or not.
The information contained in Anatomy Atlases is not a substitute for the medical care and advice of your physician. There may be variations in treatment that your physician may recommend based on individual facts and circumstances.
URL: http://www.anatomyatlases.org/