Morquio Syndrome is a type of birth defect where sometimes your heart gets too big for your body later in life.

In the book Freak the Mighty Freak is below average in height, because of this he couldn't do the things kids his age could do. This has confined him to crutches until he died. Instead of telling Max he is going to die he says he is going to get a new robot body. The Fair Gwen tells Max that Freak just said that so he had something to look forward to like heaven; getting a brand new body.