Teres minor

The Teres Minor is one of the four muscles that make up the rotator cuff in the shoulder. This small but crucial muscle is located on the lateral side of the scapula (shoulder blade) and plays a significant role in the stabilisation and movement of the shoulder joint.

The Teres Minor has its origin on the lateral border of the scapula and inserts into the greater tubercle of the humerus, the bone of the upper arm. Along with the other rotator cuff muscles (supraspinatus, infraspinatus, and subscapularis), the Teres Minor contributes to the dynamic stability of the shoulder and facilitates various arm movements.

Functionally, the Teres Minor is primarily responsible for the external rotation of the shoulder joint. This movement involves turning the arm outward, away from the body. The muscle also assists in the stabilisation of the humeral head within the shoulder socket during arm movements, contributing to overall shoulder function and preventing dislocations.

Maintaining the strength and flexibility of the Teres Minor is important for shoulder health, especially in activities that involve overhead motions or throwing. Strengthening exercises targeting the external rotation of the shoulder, such as external rotation with resistance bands, can help engage the Teres Minor. Stretching exercises for the shoulder and rotator cuff can also contribute to maintaining flexibility and preventing injuries.

In summary, the Teres Minor is a vital component of the rotator cuff, contributing to the stability and movement of the shoulder joint, particularly in external rotation. Understanding its role and incorporating appropriate exercises are crucial for promoting overall shoulder health and functionality.