# What is the rotator cuff?

The rotator cuff is called the rotator cuff. Gray's Anatomy (1918) describes it as a group of four muscles and their tendons — supraspinatus, infraspinatus, teres minor, and subscapularis.

## What it means

- A group of four muscles and their tendons — supraspinatus, infraspinatus, teres minor, and subscapularis.
- Their tendons blend with the shoulder joint capsule.
- Hold the head of the humerus in the glenoid cavity.

## Action steps

1. Around the shoulder joint.
2. Cover the top, back, and front of the head of the humerus.
3. Arise from the scapula and insert on the tuberosities of the humerus.

## Sources

- [Gray's Anatomy of the Human Body (1918)](https://www.bartleby.com/107/)

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