i once dropped a ton of bricks on my middle finger and from what i was told it split, and skin was totally and flattened (i was 3, so i dont remember). not sure about nerve damage but i assume it happened (from what i was told, you could see my bone and the skin going around it, skin was flat ) I have full feeling in the finger and do not experience electric shocks. I do have a cool scar that i show people when they piss me off. (where'd the up yours emoticon go? ) sorry i cant offer more info but being all of 3 yrs old when it happened its a bit hazy my sister cut her hand from the tip of the index finger down to the base of her hand and it took years to fix itself. I;'m not sure if she got the electic shocks but i know she had nerve damage. i'll ask her if she gets those symptoms....