What structure forms the lateral border of the Quadrilateral Space?

What structure forms the lateral border of the Quadrilateral Space?

• A. Humeral Shaft
• B. Long Head of Triceps
• C. Teres Major
• D. Teres Minor

Answer: (A)

The lateral border of the Quadrilateral Space is actually formed by the humeral shaft. Understanding the anatomy of this area is crucial for recognizing the relationships between various structures in the shoulder. The Quadrilateral Space is an anatomical region found in the shoulder that is bordered by several important structures. The humeral shaft contributes to the lateral boundary of this space, while other surrounding structures, such as the long head of the triceps, teres major, and teres minor, define the other borders. The Quadrilateral Space is notable because it contains the axillary nerve and the posterior circumflex humeral artery, which are critical for shoulder function. Knowing which structures form the borders helps in clinical assessments, particularly in injury or surgical considerations involving the shoulder region.

The lateral border of the Quadrilateral Space is actually formed by the humeral shaft. Understanding the anatomy of this area is crucial for recognizing the relationships between various structures in the shoulder.

The Quadrilateral Space is an anatomical region found in the shoulder that is bordered by several important structures. The humeral shaft contributes to the lateral boundary of this space, while other surrounding structures, such as the long head of the triceps, teres major, and teres minor, define the other borders.

The Quadrilateral Space is notable because it contains the axillary nerve and the posterior circumflex humeral artery, which are critical for shoulder function. Knowing which structures form the borders helps in clinical assessments, particularly in injury or surgical considerations involving the shoulder region.