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Knowledge center. The knee is a complex structure and one of the most stressed joints in the body. It is the largest joint, vital for movement, and vulnerable to injury. The knee is the most commonly injured joint by adolescent athletes with an estimated 2.5 million sports-related injuries annually. Many knee injuries can be successfully treated with simple measures, such as bracing and strengthening exercises. Other injuries may require surgery to correct.
Common Causes of Severe Knee Pain. Many people think knee pain only affects older people, but it can affect people of all ages. Whether it's due to arthritis or an injury, it is important to know what has caused the knee pain. Severe knee pain can lead to inflammation and mobility problems. Anyone suffering from knee pain should uncover the exact cause so that it can be treated properly.