I thought this could all be done now with 3D printers.

Jokes aside, I recently saw a CNN special where they showed how to create a very sophisticated artificial limb for an African boy who had lost both his arms in a civil uprising.

And it was done with a 3D printer.

He couldn't play tennis with this arm but he was able to go through the normal motions of eating from a plate with a fork - including picking up bread crumbs from the table with the artificial fingers.

I was truly flabbergasted.