This man had used his arms for years before he lost them in an accident and got prosthetic arms - one "regular"; one thought-controlled.
Man's bionic arm provides hope for GIs
This woman lost an arm in a motorcycle accident and is learning to use her new thought-controlled bionic arm.
Bionic arm puts life in reach
Read about it!
The Mistress' question:
Will this technology work for people, such as thalidomide babies, who never had arms or legs to begin with? One would assume it would, if those people have the shoulder nerves (or, alternately, hip nerves) mentioned in the article.