«Osteosarcoma often occurs in the long bone, often in the ends of the long bones, which is where the growth plate is," said Wang. "So if you have to treat that, or have surgery to remove the tumor, you often affect growth." "Osteosarcoma often occurs in the long bone, often in the ends of the long bones, which is where the growth plate is," said Wang. "So if you have to treat that, or have surgery to remove the tumor, you often affect growth." A tiny gear box and a magnet are located inside Morgan's prosthetic bone. Doctors place Morgan's leg in a donut-shaped housing where there is another magnet. When the two magnets meet, the tiny gear inside Morgan's leg powers on and starts to turn, and Morgan's leg grows. Every four minutes that Morgan's leg is in the donut-shaped device, her leg grows a millimeter».

ABC News, June 21, 2010. See the report.