Over the past two decades, it has become accepted that the rotator interval is a distinct anatomic entity that plays an important role in affecting the proper function of the glenohumeral joint. The rotator interval is an anatomic region in the anterosuperior aspect of the glenohumeral joint located between the distal edges of the supraspinatus and subscapularis tendons and contains the insertions of the coracohumeral and superior glenohumeral ligaments. These structures form a complex pulley system that stabilizes the long head of the biceps tendon as it enters the bicipital groove of the humeral head.
Lesions of the rotator interval may result in
1. Glenohumeral joint contractures- adhesive capsulitis
2. Shoulder instability
3. Anterosuperior internal impingement.
4. Lesions to the long head of the biceps tendon.