 [ Symptoms ] what is general anesthesia what is the difference between general anesthesia and local anesthesia [ Disease ] good news here is an article on nail problems and injuries that contains the following statement along with a lot of other great information  separation from the nail bed once your nail separates from its nail bed for whatever reason it will not reattach nails grow back slowly it takes about 6 months for fingernails and up to 18 months for toenails to grow back attached to the nail bed  the webmd answers staff usually but you had quite a crush injury the body has a remarkable ability to re grow a lost or damaged nail assuming the matrix the base of the nail that has the cells needed to regenerate the nail has not been damaged a damaged matrix may cause the nail to grow back somewhat deformed or have a ridge when we lose a finger we do not grow a new one but when we lose a nail the body likes to replace it time will tell if your nail re grows again and comes in normally my son just had the same accident so i am curious since its been a little over a year has your sons nail grown back