If you've ever been injured enough to need stitches, you know that it's no picnic. Administration of local anesthetic aside (which usually involves multiple shallow injections directly into the wound site), flesh is touchy stuff to suture back together. Get the suture too close to the edge of the wound and it might rip through and pop open again. There may not be enough usable skin far enough away from wound site to stick a needle through (such as on particularly skinny fingers or the backs of some ankles). Some parts of the body just don't take well to being …