The below is a summary of information from the internet. We make no claims as to the accuracy. You should consult a Physician before performing any exercises.
"Tennis Elbow" is a painful condition caused by overuse of arm, forearm, and hand muscles that results in pain in the lateral side of the elbow region. More specifically it occurs at the common extensor tendon that originates from the lateral epicondyle. This is the area where the muscles and tendons of the forearm attach to the outside bony area of the elbow. Tennis Elbow occurs when tendons in your elbow are overworked, usually by repetitive motions of the wrist and arm. When you use these muscles over and over again, small tears and inflammation develop in the tendon. Over time, this leads to irritation and pain where the tendon is attached to the bone on the outside of the elbow.
You don't have to play tennis to get Tennis Elbow. This condition can also be caused by sports such as swimming and climbing, the work of manual workers and waiters, playing guitar and similar instruments, as well as activities of daily living. Any activity that involves repetitive twisting of the wrist can lead to this condition. Even constant computer keyboard and mouse use can cause Tennis Elbow.
It is estimated that Tennis elbow affects 1% to 3% of the population. It may affect as many as 50% of tennis players during their careers. But, less than 5% of all tennis elbow diagnoses are related to actually playing tennis.