When she was a baby, Patience Beard lost her left leg. But that’s never stopped her. When she was four years old, Ms. Beard started gymnastics. When she was in the seventh grade, she started cheerleading. Last year, she tried out for the cheerleading team of the University of Arkansas. The coordinator gave her “no special consideration,” but insisted that Ms. Beard perform all of the required tricks and stunts that the other cheerleaders do.