Tennis is a sport enjoyed by many. Its benefits increase the wellness of the body and its function, but with any sport, there is risk of injury. One of the most common tennis related injuries seen at North Shore Rehab Associates is lateral epicondylitis, more commonly known as “tennis elbow.” Tennis elbow is one of several overuse injuries that can affect your elbow. The main cause of pain related to tennis elbow occurs primarily where the tendons of your forearm muscles attach to the bony prominence on the outside of your elbow (lateral epicondyle).