Prosthetics company Otto Block has developed a bionic hand that works by responding to nerve impulses, just like a normal hand. It can pick things up, pinch, and tie shoelaces.
The operation is performed by Professor Aszmann. Any remaining scar tissue is removed, and the prosthesis is fitted with a ‘cushion’ of transplanted tissue to support the bionic limb.
For more information on Otto Block’s bionic hand, see here: http://www.bbc.co.uk/news/science-environment-13273348