The location of your pain in tennis elbow is where by some tendons with the forearm muscles attach towards the bone around the elbow. The pain is thought to be because of swelling or thickening from the tendon initially and eventually degeneration (putting on) in the tendon. The supinator muscle https://www.theorthopaedicandpainpractice.com/how-to-alleviate-tennis-elbow-pain-tips-from-a-medical-expert/