Doctor I've always been interested in the human anatomy and how body parts expand. No, this is not a dirty thread. Basically I decide to get into the field and study up as hard as I can and well, I somehow get into medical school. In a class and one of the lecturers begins an open discussion. He's talking about anatomy. So I begin to get involved in the discussion. People in the class are uninterested but I double down. I ask about how different body parts develop and learn that the ears and nose never stop growing. But I've been wondering, how do you make your knee grow?