(CNN) — After running inside from a rainstorm one Friday evening last January, Deepa Kulkarni leaned against the doorway with her right hand to take off her boots. Then, in an effort to make sure the dog didn’t get out, someone slammed the door hard, and it landed right on her pinky.

Kulkarni thought the door had only bruised her finger, but then she looked down and saw the tip of her pinky lying on the floor.

via Woman’s persistence pays off in regenerated fingertip – CNN.com

  I can testify this works.  The Old Man used a similar treatment when his big toe was rotting off from diabetes.  He still has the toe and it’s completely healed…it looks weird but at his age they would anyway.