Knee pain can be a royal pain-in-the-you-know-what. Did you know it is also an actual Royal Pain? Queen Elizabeth, the Queen of England, has chronic knee pain and has reportedly given up riding, her favorite activity. She is also being encouraged to have surgery and a £1million lift has been installed at her home in Sandringham. Knee pain is extremely uncomfortable to many people in all parts of the world. Flexcin is taken by many people who experience knee pain because the CM8 ingredient is helpful in building back the lost cartilage and increasing overall joint mobility.