Hi, I have had a lot of reconstruction surgery, but to floor of mouth and jaw. What you describe, and this is only a guess on my part, looks like the simple and easiest way to do this. I do know from experience that the mouth will grow tissue back quickly. So the place where they removed the flesh will grow back. I had nothing on the floor of my mouth because of a failed flap, where the open bone was sticking up even covered itself, this suprised me.Wrist flaps more difficult.