The rotator cuff consists of a bundle of muscles and tendons that covers the shoulder joint, specifically the head of the upper arm (humerus). It is primarily responsible for supporting and stabilizing the joint, allowing range of motion for the arms and shoulders.
Furthermore, it protects the structure of the shoulder joint by ensuring that the ball of the humerus is securely placed within the socket. But since the rotator cuff muscles are always at work, injuries to these four specific tendons are fairly common.
According to studies, rotator cuff tears are a common injury affecting almost 2 million people yearly. The risk of injury increases with age since older people are more prone to muscle degeneration and wear and tear due to overuse.
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