The posterior circumflex humeral artery is a vital blood vessel that supplies blood to the deltoid muscle and shoulder joint. It originates from the axillary artery and travels through the quadrangular space, accompanied by the axillary nerve, to reach its target areas.
Shoulder pain can arise from a variety of sources, including muscular, skeletal, or nerve issues, and often requires a multifaceted diagnostic approach to determine the underlying cause. Treatment may involve physical therapy, medication, or surgery, depending on the severity and origin of the pain.
The quadrangular space is an anatomical region of the shoulder that allows passage of important neurovascular structures, including the axillary nerve and the posterior circumflex humeral artery. Understanding its boundaries and contents is crucial for diagnosing and managing shoulder injuries and pathologies, such as quadrilateral space syndrome.