I saw a TV show about a year ago about how they can "regrow" fingers. A gentleman cut the entire tip of his finger off in a model airplane accident. He put some powder on it made I think from pig intestines or cells, and the finger slowly regenerated (even the nail). I don't know if this is still in the research stage or not, but it would be great if that was an option. The progress pictures were nothing short of amazing! I think he was one of his sons was in charge of the research so when the accident happened he called him to get the powder. I will see if I can find anymore about this.
So far as we presently know, the region from the fingertip to the very first knuckle is the only portion of our bodies that still possesses the ability to regenerate. Once we learn how to extend that to the second knuckle we will then be well on our way to regenerating damaged body parts.