Dr. Carol, from ReLiva Physiotherapy & Rehab (the physiotherapy specialist), shows some simple exercises for knee pain using a foam roller. These can be done easily at home to relieve knee pain. Knee pain is a common phenomenon that plagues most of the people irrespective of their age. It can be the outcome of a torn cartilage or a ruptured ligament. Medical complications, such as infections, gout or arthritis (painful inflammation and stiffness of the joints) can also give way to knee pain. Minor knee pain can be eased by self-care remedies guided by physical therapy.