I work at Egleston Children's Hospital and I work in the operating room pharmacy at least once a week. Yesterday there was a surgery that they say you will only see once in a lifetime. So I went and watched part of the surgery. It is called a Van Ness Rotationplasty. Basically, the kid's ankle will become his knee joint! Check out both of the links below... I think you'll find this interesting!

http://www.wmt.com/expandableimplant...amputation.asp

http://www.amputee-coalition.org/inm...nplasty-01.jpg