Tennis elbow, also referred to as lateral epicondylitis, is a common cause of elbow pain in athletes. Tennis elbow is considered a cumulative trauma injury that occurs over time from repeated use of the muscles of the arm and forearm.

The pain of tennis elbow is thought to be related to small tears and damage to the tendons that attach muscles of the forearm to the lateral epicondyle of the elbow. In most cases of chronic elbow pain, it is believed to be due to tendinopathy rather than tendinitis.

In racket sports, overuse of the forearm extensor muscles, particularly the extensor carpi radialis brevis, along with repeated impact can increase the risk of tennis elbow. Other factors that may contribute to tennis elbow include lack of strength, poor technique, and increases in duration or intensity of play.

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