Tennis elbow is a condition characterised by an injury to the muscles and tendon area around the elbow, especially the outer bony area attached to the muscles of the forearm. In medical terms, it is also called ‘lateral epicondylitis’ or ‘medial epicondylitis’, depending upon the location of the problem. These muscles allow you to extend your wrist, and in case of an injured elbow, the person is unable to move his or her hand freely. The condition is related to degenerative changes rather than any kind of inflammation.
According to researchers, tennis elbow is more likely to occur 14 to 41

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