What does the acronym SITS refer to in the context of rotator cuff muscles?

The acronym SITS specifically represents the four muscles that compose the rotator cuff: supraspinatus, infraspinatus, teres minor, and subscapularis. These muscles play a crucial role in stabilizing the shoulder joint, allowing for a wide range of motion while providing strength and support. The supraspinatus helps with arm abduction, the infraspinatus is responsible for external rotation, the teres minor assists in external rotation and adduction, and the subscapularis facilitates internal rotation.

Understanding the SITS acronym is vital because it encapsulates the essential components of the rotator cuff, which is integral to maintaining shoulder health and function. The other choices incorrectly include muscles that do not belong to the rotator cuff or mix them with different muscle groups outside this context. By recognizing that the correct answer specifically names all four rotator cuff muscles, you can more effectively apply this knowledge in both clinical assessment and practical fitting situations.