Where does the teres minor insert?

Where does the teres minor insert?

• A. Superior facet of greater tubercle
• B. Middle facet of greater tubercle
• C. Inferior facet of greater tubercle
• D. Lesser tubercle

Answer: (C)

Teres minor attaches to the humerus at the inferior facet of the greater tubercle. This placement is part of a pattern where the three rotator cuff tendons insert on distinct facets of the greater tubercle: supraspinatus on the superior facet, infraspinatus on the middle facet, and teres minor on the inferior facet. The subscapularis, meanwhile, inserts on the lesser tubercle. This arrangement allows teres minor to contribute to external rotation and provide posterior shoulder stability.

Teres minor attaches to the humerus at the inferior facet of the greater tubercle. This placement is part of a pattern where the three rotator cuff tendons insert on distinct facets of the greater tubercle: supraspinatus on the superior facet, infraspinatus on the middle facet, and teres minor on the inferior facet. The subscapularis, meanwhile, inserts on the lesser tubercle. This arrangement allows teres minor to contribute to external rotation and provide posterior shoulder stability.