Knee tendonitis is an injury caused by inflammation, irritation or swelling of the tendons of the knee. It’s the most common of possible knee injuries and is usually an overuse injury occurring among athletes or active individuals as a result of overtraining or subjecting the knee to sharp movements or uneven surfaces. Symptoms include tenderness, pain and stiffness in the knee area. Individuals faced with these symptoms should contact a physician for an examination. If tendonitis of the knee is diagnosed, the products below can ease the pain and speed recovery from the condition. Care should be taken, however, to choose with the advice of a medical professional in order to ensure that the product chosen is suited to the patient’s activity level.