Pain and inflammation on the inner side of elbow (medial epicondyle of the elbow), where the tendons that connect the muscles that flex the wrist and fingers attach to the bony bump on the inside of the elbow is often due to medial epicondylitis, or Golfer's elbow.

Tennis elbow is one of several overuse injuries that can affect the elbow. The tendons that join the forearm muscles on the outside of the elbow become inflamed and damaged, causing microscopic tears to form in the tendon. This leads to pain and tenderness on the outside of the elbow.