As the diagram shows a large number of forearm muscles are attached to a small bony bump at the side of your elbow called the lateral epicondyle. With so many muscles attached to such a small area, it creates an area of high stress. If the muscles are overused the attachment can become inflamed or injured. It is called tennis elbow because it is common in tennis players, but it can happen to anyone and is called "Lateral Epicondylitis"
Signs and Symptoms
There will be pain and tenderness on the outside of the elbow. Pain will be brought on by activities that work the muscles at the back of your forearms, such as gripping or twisting. Although called tennis elbow, it is common in people who do any sort of repetitive activity using their forearm muscles. Examples include tradespeople, production workers, and those who use keyboards.
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