Yes. It is now possible to do this nowdays, but there are risks involved and a strict patient selection because of it.
Yes. It has been done in past.
Possible. It may be a challenge finding a compatible donor.
Challenging. To find a donor with a viable hand and hard to get to function normally due to vascular and nerves.
Yes. Many centers around the world are doing hand transplants although most consider it experimental at this point. Read more...