Rotator Cuff

Question 1

Teres Minor

Infraspinitus

Answer 1

★ Insertion
Infraspinitus - Middle facet of the greater tubercle of the humerus
Teres Minor - Greater tubercle of the humerus
★ Isolated function
Concentrically accelerates shoulder external rotation
★ Integrated function
Eccentrically decelerates shoulder internal rotation
Isometrically stabilizes the shoulder girdle

Question 2

Subscapularis

Answer 2

★ Insertion
Lesser tubercle of the humerus
★ Isolated function
Concentrically accelerates shoulder internal rotation
★ Integrated function
Eccentrically decelerates shoulder external rotation
Isometrically stabilizes the shoulder girdle

Question 3

Supraspinitus

Answer 3

★ Insertion
Superior facet of the greater tubercle of the humerus
★ Isolated function
Concentrically accelerates abduction of the arm
★ Integrated function
Eccentrically decelerates adduction of the arm
Isometrically stabilizes the shoulder girdle