Tennis elbow
Tennis elbow, or lateral epicondylitis, is the most common source of chronic elbow pain (even if you don’t play tennis!).
Pain is located on the outer part of the elbow, but may also be experienced all the way down the back of your forearm and wrist.
Tennis elbow is an acute or chronic inflammation of a group of muscles and tendons that attach to the bone on the outside of the elbow (lateral epicondyle). These muscle pull your wrist backward (extended) so that any activity involving these muscle, even sipping a cup of tea in some, can be very painful.
Because one of these muscles attaches deep within the elbow joint (radio-ulnar joint), continually overloading this can result in severe joint pain, arthritis and even exquisitely painful bone spurs.