Which of the following best describes Tennis elbow?

Tennis elbow, clinically known as lateral epicondylitis, is characterized by inflammation of the tendons that attach to the outer part of the elbow. This condition typically arises from repetitive motion and overuse of the forearm muscles, particularly those involved in wrist extension, which is why it is often associated with activities like playing tennis. The inflammation results in pain and tenderness on the outer side of the elbow, affecting the ability to perform tasks that involve gripping or lifting.

Understanding the context of the other options, inflammation of the wrist tendons refers to conditions like tendonitis in the wrist, which does not specifically relate to the elbow area. Compression of the median nerve describes conditions such as carpal tunnel syndrome, which affects the wrist and hand rather than the elbow. Meanwhile, pain in the shoulder joint does not pertain to tennis elbow at all, as this condition focuses specifically on the elbow itself. Therefore, inflammation of the elbow tendons accurately reflects the nature of tennis elbow.