Tennis Elbow is a term used to describe pain in the outer part of the elbow. It is usually caused by repetitive overuse by the forearm muscles and tendons. It got the name Tennis elbow because many tennis players got it from the constant swinging of the tennis racket, utilizing their forearm tendons and muscles. It can also be caused by other repetitive uses, like swinging a heavy tool of some kind.
If you have pain on the outer part of the elbow or pain gripping objects, you may have tennis Elbow. Consult a specialist with experience dealing with Tennis Elbow.