While that is still a nasty wound it is so much neater looking than it was. The top puncture is almost entirely healed and the main puncture has nice straight edges that will eventually seal nicely. The problem with subcutaneous damage that is ragged and torn, is they try and sow it together as best as possible and hope, but you can often end up proud flesh that the blood supply to has been too damaged to maintian before the capillaries can regrow and start supplyng oxygen and nutrients again. With that sort of wound they have to keep it open and allow it to granulate up from below. I don't know what they do these days but in years gone past they would lightly abrade the inside of the wound and then rinse it thoroughly with saline to remove any dead cells.
It is not a pleasant experience but the discomfort of the daily treatment is definitely worth the end result - no nasty lumps or weaknesses and minimal scarring. I am no expert, just going on what my brother went through on his lower back many years ago. His girlfriend was a nurse and so she did the daily dressing. He originally had a hole you could fit three or fingers into up to the first knuckle. But it healed brilliantly and although the scar evident it was not raised or lumpy etc.
Bottom line... looks the plastic surgeon has done a great in tidying it up and allowing access to that section that needs to heal from beneath. Not a lot of fun for you, I realise, but it is definitely well and truly on the best track from my limited experience of these things. Therefore I am very pleased for you and hope this gives you some measure of comfort. God knows you could probably do with it.
Cheers
Blue