We're seeing some progress! We've gone in every other day since last Friday to have the dressing for the wound vac on B's thigh changed, and each time the wound is noticeably, measurably smaller! It's certainly not all closed up yet, but it sure seems like we're headed in the right direction now.
Point of information: vac on the machine is actually V.A.C., which stands for "vacuum assisted closure". We sure are grateful that God gave somebody the brains to figure out that this nifty little machine would be just the thing to invent!