What is Tennis Elbow?
Tennis Elbow, also called lateral epicondylitis, is an injury to the muscles on the back of the forearm that extend the wrist and fingers. The site of injury is typically the lateral epicondyle (shown in picture above), a bony bump on the outside of the elbow where these muscles attach.
Another condition which causes elbow pain is Golfers Elbow, also known as medial epicondylitis. This condition affects the muscles that flex the hand and wrist (on the front of your forearm) and the major site of pain is on the inside of the elbow. It isn’t as common as tennis elbow.
Tennis Elbow is caused by damage to the muscle tissue around the area the muscles attach to the outside of the elbow, the lateral epicondyle. It occurs when more force is applied to an area than the normal healthy tissues can handle. This usually happens when there are abnormal biomechanics in that area.