Teen 17 years-old some time before falling from a bicycle on the move, was in the emergency room, where she was made X-ray - N.
Visually bruises in both knees, complains of pain on the outer surface on both sides, one side is more then another.
At US in the area of the lateral meniscus on both sides there is a small amount of fluid with a debris, mostly on the side where there is more pain (bilateral partial tear of the lateral meniscus).