Although there are more hysterectomies in the United States than in any other industrialized nation in the world, many American women do not have a clear understanding of the procedure and how it will affect their bodies, according to a new study. For example, more than one in 10 mistakenly thought that the uterus, which is removed during a hysterectomy, is not necessary to pregnancy. This suggests that some women may think they can have biological children after a hysterectomy, which is not possible.