What is Tennis Elbow? Any activity that involves repetitive gripping of objects can result in Tennis Elbow or Epicondylitis. Tennis elbow is the common name given to pain originating on the outside or lateral side of the elbow. This condition arises from an irritation or inflammation of the tendons of one or several forearm muscles at their attachment to the bony protuberance close to the elbow joint, known as the lateral epicondyle. Therefore the medical term for this condit