What is the rotator interval of the shoulder defined by?

The rotator interval of the shoulder is anatomically defined by the coracohumeral ligament and the superior glenohumeral ligament. This area is an important zone in the shoulder anatomy that plays a significant role in the stability of the shoulder joint.

The coracohumeral ligament originates from the coracoid process of the scapula and extends to the greater tubercle of the humerus. It provides support and stability to the shoulder, especially in overhead activities. The superior glenohumeral ligament also contributes to the stability of the glenohumeral joint, particularly in the prevention of inferior dislocation.

Recognizing the boundaries defined by these ligaments is crucial for understanding the mechanics and potential pathologies of the shoulder. Injuries or changes in this region can lead to various disorders, including rotator cuff tears and shoulder instability.

In contrast to the other options, which include different muscle tendons and anatomical features that do not define the rotator interval in the same manner, the correct choice accurately highlights the ligamentous boundaries that delineate this critical area of the shoulder.