posterior humeral circumflex artery

An artery that branches from the axilliary artery and supplies the deltoid, teres major, teres minor, and long and lateral heads of the triceps brachii muscles, glenohumeral joint, and the cutaneous supply to the area posterolateral to the proximal humerus. This artery courses posteriorly with the axillary nerve, through the quadrangular space, to the posterior aspect of the humerus and anastomoses with the anterior humeral circumflex artery.

Type Muscle
Parent Structure artery
FMA ID 22684

Frequently Asked Questions

What is the posterior humeral circumflex artery?
The posterior humeral circumflex artery is a branch of the axillary artery that travels posteriorly through the quadrangular space alongside the axillary nerve. It supplies blood to several muscles of the shoulder region and the glenohumeral joint.
Where is the posterior humeral circumflex artery located?
The posterior humeral circumflex artery originates from the axillary artery in the axilla and courses posteriorly through the quadrangular space — bounded by the teres major, teres minor, long head of triceps, and the surgical neck of the humerus — to reach the posterior aspect of the humerus.
What is the function of the posterior humeral circumflex artery?
The posterior humeral circumflex artery supplies oxygenated blood to the deltoid muscle, teres major, teres minor, and the long and lateral heads of the triceps brachii. It also contributes blood supply to the glenohumeral joint and the skin over the posterolateral proximal humerus. It anastomoses with the anterior humeral circumflex artery.
What conditions may be associated with the posterior humeral circumflex artery?
Compression or injury to the posterior humeral circumflex artery may be associated with quadrangular space syndrome, a condition involving neurovascular compression in the quadrangular space. It may also be relevant in the context of shoulder injuries or surgical procedures. Clinical evaluation is required for assessment.
How is the posterior humeral circumflex artery examined?
The posterior humeral circumflex artery may be assessed with CT angiography, MR angiography, or conventional angiography when vascular pathology is suspected. Doppler ultrasound can also be used. Clinical evaluation of shoulder function and neurovascular status complements imaging.

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Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.