By Steve Bittenbender LOUISVILLE (Reuters) - A 6-year-old Kentucky boy born with a malformed right hand because of a rare disorder has received what he called his best Christmas gift ever - a "bionic" prosthetic made from 3-D printing technology. Lucas Abraham, who has wanted a working right hand since he was 2 years old, showed off the new prosthetic made by University of Louisville bioengineering students. "It's better than every gift that I've ever had before," Lucas told a news conference at the university on Wednesday.
