The patella, or kneecap, sits in a groove at the end of the femur (thigh bone). Sometimes an injury occurs that pushes the patella to the side, causing it dislocate or become unstable.
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The patella, or kneecap, sits in a groove at the end of the femur (thigh bone). Sometimes an injury occurs that pushes the patella to the side, causing it dislocate or become unstable.