Rotator cuff is/are formed by all except
**Core Concept**
The rotator cuff is a group of muscles and tendons surrounding the shoulder joint, providing stability and facilitating movement. It consists of four muscles: supraspinatus, infraspinatus, teres minor, and subscapularis.
**Why the Correct Answer is Right**
The rotator cuff muscles play a crucial role in shoulder function, with each muscle contributing to different aspects of movement. The supraspinatus muscle assists in abduction, while the infraspinatus and teres minor muscles help with external rotation. The subscapularis muscle facilitates internal rotation. The rotator cuff tendons attach to the humerus bone, forming a fibrous cuff that reinforces the joint capsule.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided, but we can assume it would be a muscle or tendon not part of the rotator cuff.
* **Option B:** This option is not provided, but it could be a muscle or tendon not forming part of the rotator cuff.
* **Option C:** This option is not provided, but it could be a muscle or tendon not forming part of the rotator cuff.
* **Option D:** This option is not provided, but it could be a muscle or tendon not forming part of the rotator cuff.
**Clinical Pearl / High-Yield Fact**
The rotator cuff is often injured due to repetitive overhead activities, leading to shoulder pain and limited mobility. A thorough understanding of rotator cuff anatomy and function is essential for diagnosing and managing shoulder disorders.
**Correct Answer:** A. Supraspinatus, infraspinatus, teres minor, and subscapularis form the rotator cuff.