Au contraire.
Apparently to recover from this kind of surgery you have to hit the ground exercising.
Before he left the hospital Tommy was instructed that every day, starting from the day he arrived home from the hospital, he needs to:
1. Do six different exercises 10 times each, 3 times a day.
2. Stick his leg into a continuous passive motion machine that keeps bending and unbending his knee. His knee needs to be in this bending machine 4 to 6 hours a day.
3. Ice his hip 20 minutes out of every hour.
4. Practice walking around the house on his crutches whenever he's not engaged in any of the above.
5. Ditch the Netflix.
The logistics of how all this activity is supposed to fit together is a bit problematic, especially trying to fit in all that bending and icing. And it was even so much more problematic that first day home when Tommy, who his whole life has been the avatar of cooperation, strove to follow his exercise instructions before he had his pain meds squared away.

I promised to post another one as soon as he was feeling better and the next day I did post the one below, which made everyone feel better.
I called the doctor again and talked to a resident who said not to worry, just take off the bandage then wipe around the wound with a dry sterile gauze then cover the wound with another sterile gauze and some tape and all should be well.
And after that all was.
Except for the mattress, which was brand new.
But even the mattress story has a happy ending, and if any one happens to be interested in finding out how to totally get a semi-fresh blood stain out of a mattress then read on. Otherwise you might want to stop right here. ;)
Anyway, so I went on the internet to see if there was any advice on how to salvage my mattress and, wonder of wonders - truly, is there any answer that can't be found on the internet? - there was!
I found the instructions on Wikihow.com:
First I blotted the stain with a wet (cold water!) paper towel then I blotted it with a dry paper towel. Then I repeated the process and kept repeating it until the stain was gone and the mattress felt dry to the touch. I spent about half an hour wet-then-dry-blotting the stain, and, tedious and time-consuming as the process was, dang, it worked! Look:

(It was close to the front edge and just a little right of center).
http://www.wikihow.com/Remove-Blood-Stains-from-a-Mattress#Blotting_Before_Stain_Removal_sub
Happy weekend to all! 8)