I read about prosthetic limbs they are pretty cool. It will improve how it effects peoples lives and how people see things now.In the artical I read it said nothing about what they previously used but what I
think is they did not have anything before this. I do think this advancement is safe because all it could do is hurt your wallet in cost. It is already being used on many patients. Many people who use this product love it because it helps them do things they could not do before when they did not have that limb it helps them do many things.Like i said before this is a very good product to use if you don't have that limb. I think most people who need this product that have not found out about  it may be really happy when they do.