Your answer I said is specific to the type of wound. There are various ways to do it that are appropriate for a variety of situations. One may be sensible in one case and not in others. Moreover, there are ways to do things and the best way to do things. Like I said in my initial post you won't get the correct answer to this unless you ask a specific question. You could ask generally and you have had general answers but they may or may not be wrong for specific cases.
If you really want to know then you need to be exact in your question and whom to ask. I know where to look for the right answer and I could as eg Minstadave, has done give you a general answer, but if you want to know the correct answer ask a specific question to a tissue viability nurse or a trauma nurse not a doctor or someone who deals with these things now and then. Nurses have forums too, ask on a US, UK or Aus/SA/NZ one. Or alternatively look in the tissue viability journals that are easily accessible for academic access if you have that.
Personally I don't care whether it's a medical thread or not. My posts are not so much for you but more to highlight what I feel to be very inconsistent mod actions on such threads. The close down some threads where people need help (that is their choice) but then let other stuff stand on the same rules even if there is no real issue (eg this thread) and then seemingly never have a problem with other stuff. I just find their stance very very inconsistent. Nothing to do with you or this thread really.