It's all I can think about anyway. They do cover the fissure...If you imagine the fissure looks like a paper cut, long and thin...the surgeon first cuts all the necrotic/old tissue out of it and makes a nice new fresh wound that is ovular. The next question is how to fill it in...In the case of my first flap surgery, a y-v, the surgeon stretched in skin from just outside of my butt and sewed it in place to "fill" the defect. In OMB's surgery, the same thing happened essentially, but instead of skin, it was mucosa from further inside her body. In my last surgery, the surgeons pulled in a piece of skin from the outer left, and a piece of skin from the outer right. They both met in the middle, with which was the suture line right down the posterior midline. I hope that's easier to conceptualize.
If you mean to say that it sounds silly that they would create a suture line right in the the center of the wound, where the old fissure was originally, I totally agree. And I even said as much prior to the surgery. I literally told both the plastic surgeon and the CRS that I do not want a line of stitches right down the posterior midline, because it's a weak spot and I bet it will break. It turns out I was right, but the surgeons said they had to fill it that way, because it was a very broad wound and required half the skin to be pulled in from one side, and half from the other. It worked in Suzyjank's case, and for some reason didn't work in mine. I can't really figure out why though. The flaps healed in place and look good he said, so even if the whole center line of sutures ripped, the flaps should be close together and just fill out their center. I don't get it at all.