DESCRIPTION   Adam Deans was an athletic teenager and had aspirations of becoming a professional athlete.  However, all that changed when he fell down a flight of stairs at school.  At first, doctors thought Adam had dislocated his left knee, but upon getting further medical attention, tests showed he had cancer, known as osteosarcoma in his distal femur.  Doctors recommended chemotherapy, but when that was ineffective, the leg was amputated in 2005.  In 2008, a friend introd