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When the joint is bent the muscle gets hard and the bottom relaxes.

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12y ago

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Is it better to keep your knee straight or bent when a burn mark is healing?

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No, you should not be able to move your kneecaps around by flexing the muscles in your thigh. The kneecap is a small bone that is designed to move in a specific groove in the knee joint when the leg is bent or straightened. Trying to move the kneecap by flexing the thigh muscles can cause strain on the knee joint.