Tendinosis is a condition that affects the tendons, which are the fibrous tissues connecting muscles to bones. It occurs when these tendons undergo degeneration due to overuse, aging, or repetitive stress. Unlike tendinitis, which involves inflammation, tendinosis is characterized by a breakdown of the tendon structure without significant inflammation. Commonly seen in athletes and individuals with repetitive motion jobs, tendinosis can lead to pain, stiffness, and reduced mobility in the affected area. Treatment often includes rest, physical therapy, and sometimes injections to promote healing. Early intervention is crucial to prevent further damage to the tendon.