Knee pain is a pain localized in or around the knee. The pain usually is anterior, which means it’s felt at the front of the knee. But the pain also may be felt at the sides, back or along the joint line of the knee.

It is common pain and can occur suddenly or over a period of time, often difficult to pinpoint or describe it, and can affect people of all ages. Numerous things can cause knee pain, such as cartilage tear, ligament tear, arthritis or muscle problems.

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