FORT SAM HOUSTON, Texas, Aug. 28, 2008 – A powder that regrows fingers and toes sounds like the stuff of fairy tales, but medical experts here are hoping they can use it to make magic happen for wounded warriors. Doctors from the U.S. Army Institute of Surgical Research are trying a regenerative medicine powder that’s already approved by the Food and Drug Administration in hopes of stimulating tissue growth in soldiers with missing extremities. “The powder is FDA approved and is already being used for hernia repairs and other applications,” said Dr. Steven Wolf, chief and task area manager...