Your knees are the most vulnerable joints in your body. Aside from the wear and tear they endure from supporting your weight and ensuring your mobility, your knees are also prone to injury from their limited range of motion. While they are vital for all lower body movement, your knees are only meant to bend backward and then come forward in one smooth motion.
Problems begin when sports, exercise, or even an unnatural twist of your body causes undo stress on one or both knees, usually from side to side compression, hyper-extension or over rotation. When this occurs, you’re definitely going to feel the pain and frequently less mobility for a while.