Hello Dennis,
Crikey, that's a lot to happen! I can empathise regarding the non-healing wound as I've only recently been declared healed from the one in my left foot. It took 11 months including six weeks in a cast to immobilise my foot.
I can't speak to pins or screws, but I do know that inflammation is going to be what determines your progress. Assuming no post-op infections and nothing else going on, it should be fairly rapid. Do you still have the PICC line in place?
Wishing you all the best for the op, and rapid healing. You've been through a lot and deserve a break from it, now. I'll keep you in my thoughts.
John