Laceration- I re-opened that fatty layer.

This is a older post, but for anyone with a similar question, the answer is that it does not need to be sutured again.

As long on the skin layer is intact, the area underneath will usually heal.


Also of note, usually, wounds that are more than a few hours old are not sutured, unless absolutely necessary (to cover nerves, tendons, joints, etc). Delay in closing wounds causes the rate of infection to go up dramatically, when the wound is then closed. So, in those cases, the wound is left to heal by secondary intention.

Almost all wounds will eventually heal on their own. We close wounds to make the scar appear better. But, the act of closing wounds can, in some cases, actually make the chance of infection higher. So, old or dirty wounds are usually left open, for the body to heal on its own, from the bottom up, by secondary intention.