The location of the pain in tennis elbow is where by some tendons through the forearm muscles attach into the bone around the elbow. The pain is considered a result of swelling or thickening on the tendon at first and eventually degeneration (putting on) from the tendon. Blood is taken https://www.theorthopaedicandpainpractice.com/how-to-alleviate-tennis-elbow-pain-tips-from-a-medical-expert/