Imagine going for a decade without any hands and then suddenly having a new set to work with. That's what happened to Jeff Kepner, the first person to receive a double hand transplant in the U.S.
Kepner lost both his hands and feet from a bacterial infection about a decade ago, but was supposedly ambivalent about the surgery, after hearing reports of previous attempts failing due to rejection. With a little persistence from his wife, and some convincing from the head surgeon about new anti-rejection techniques, he agreed to try it. The transplant required 21 surgeons working in groups of four on each arm to attach the new hands.
Now, more than 2 months after the surgery was performed, Kepner displays no signs of rejection. He has only limited use of the new hands, because the muscles are still stiff. He can slightly squeeze a tennis ball, move stacks of cones around, and even play Connect-4. He's got a ways to go, though, as the nerves only regrow at a rate of about an inch per month. But in a few years, he might be able to function as he once did over a decade ago.
Look up Lee Spievack. He re-grew his amputated finger using powdered cellular matrix derived from the lining of pig's bladders. Transplants are doomed to become an ancient procedure in the future. Just Google this guy, and there are photos of the re-generation process, which took over a month.
Its like that book Unwind.
next it's the true version of faceoff. Mr. spievack only clipped off the tip of his finger which is actually likely to grow back seemingly normal anyways. My dad once shut a door on a girlfriend of his pinky and took off about twice as much as spievack and aside from it being a little short (because the cartilaginous tip and a bit of bone didn't grow back)it looked normal once it healed. thanks to some nazi experiment documentation we know that a newborns fingertip can be cut off I think it was to the first knuckle and grows completely back. Nazi's were sick.
Too bad they only had two right hands and one thumb faced the wrong way.