An Overview of the Rotator Cuff Muscles

🔍The rotator cuff muscles are distinct from the muscles of the shoulder girdle. The rotator cuff muscles move the humerus, while the muscles of the shoulder girdle move the scapula.

💪The supraspinatus is the most frequently injured rotator cuff muscle and plays a role in shoulder abduction.

🔄The infraspinatus and teres minor facilitate shoulder external rotation.

↕️The subscapularis facilitates shoulder internal rotation.

🔒All rotator cuff muscles stabilize the shoulder joint, preventing excessive movement and promoting joint integrity.

What are the four rotator cuff muscles?

—The four rotator cuff muscles are the supraspinatus, infraspinatus, teres minor, and subscapularis.

Which rotator cuff muscle is the most frequently injured?

—The supraspinatus is the most frequently injured rotator cuff muscle.

What is the primary function of the supraspinatus?

—The supraspinatus is responsible for initiating shoulder abduction.

Which rotator cuff muscles facilitate shoulder external rotation?

—The infraspinatus and teres minor are responsible for shoulder external rotation.

What is the role of the subscapularis muscle?

—The subscapularis muscle facilitates shoulder internal rotation.

00:01Introduction and channel announcement.

00:12Overview of the rotator cuff muscles and differentiation from the muscles of the shoulder girdle.

01:45Introduction to the four rotator cuff muscles: supraspinatus, infraspinatus, teres minor, and subscapularis.

03:35Function of the supraspinatus and its role in shoulder abduction.

05:12Function of the infraspinatus and teres minor in shoulder external rotation.

06:25Function of the subscapularis in shoulder internal rotation.

08:04Importance of all rotator cuff muscles in stabilizing the shoulder joint.