[wasd884]

I wonder if you could use this surgery combined with a specialised prosthetic arm to create movable yet simple replacement hands.

Imagine a prosthetic arm with a hollow body and a hand that can open and close in a simple fashion. Run a hydraulic pipe from the artificial hand up to the pincer and secure the presses/cylinders at both ends.

When the amputee closes their pincer inside the artificial arm the prosthetic hand would then close. Differing amounts of pressure would allow the amputee to exert different amounts of pressure to grip, pick up and move objects.

Also, there would be no electronics to go wrong. Hydraulics are very stable, cheap and reliable technology!