Quadrangular space - location, borders, contents, quadrangular space syndrome
The quadrangular space is an important anatomical region in the shoulder that transmits key neurovascular structures. Here's an overview of its anatomy, which you can use for your YouTube video:
Quadrangular Space Boundaries
Superior Border: Teres minor muscle
Inferior Border: Teres major muscle
Medial Border: Long head of the triceps brachii muscle
Lateral Border: Surgical neck of the humerus
Contents
Axillary Nerve: This nerve innervates the deltoid and teres minor muscles and provides sensation to the skin covering the deltoid.
Posterior Circumflex Humeral Artery and Vein: These vessels supply blood to the deltoid and surrounding structures.
Clinical Relevance
Quadrangular Space Syndrome: This is a condition where the axillary nerve and/or posterior circumflex humeral artery are compressed within the quadrangular space, leading to shoulder pain and sometimes paresthesia.