Lack of communication?

After my total knee replacement, I had two weeks of in-home therapy; then I was sent to a therapy center, where I was truly challenged for awhile.  On my second visit there, I asked my therapist, Micah, if I should continue doing the exercises I had been doing at home.  
"Only if they challenge you," he replied.  
Well, compared to what he was making me do, those old exercises were pretty darned easy, so I took that as permission to stop them.  
I had my last session with Micah on Monday.  He had me choose a "graduation gift"; I selected a T-shirt with plenty of advertisement for them, and was on my way.  At no time did he instruct me in exercises to continue at home.  
I saw Dr. Strong today.  My X-rays looked great, she said.  She noticed that my knee was swollen and I told her it had been that way for three days, probably because I'd been going on forty-minute walks with Cliff.  She suggested taking Ibuprofin and said maybe I should skip the walk for a couple of days, and then start out with a twenty-minute walk and work up slowly.  
I could see she was about done with me, so I asked her two questions.  
First, is it OK if I kneel on the new knee?  Most people say you are not supposed to get down on your knees after this surgery.  
Surprise, surprise.  She said as long as I let myself down easily and didn't fall down on the kneecap, it was fine.  Hard surfaces might not be so great without a cushion, but outside, for instance on grass or soil, would be fine.  If you fall down hard on the kneecap, it could break, she told me.  
Question number two:  Are there any exercises I should continue to do at home?  
"Didn't the therapist show you what you are supposed to do at home?"  
She actually seemed a little angry, so rather than say, "No," I said, "Oh, well I can do all that stuff they had me doing there".  
I liked my therapist and didn't want to get him in trouble.  
"OK, then continue with those," she said.  
So here's where people fall through the cracks.  If I had not asked, nobody had told me to continue doing exercises and I would have assumed I was through.  Dr. Strong figured the therapist had taken care of the situation, and I guess Micah thought the doctor would instruct me.  
So I got home and found a website with several post-TKR exercises, some of which are supposed to be continued for six months.  
And they wonder why people don't follow through on these things!  
I have to thank a Blogger and Facebook friend for mentioning to me yesterday that I would still have to do therapy at home; thanks, Deb!  If not for you, I wouldn't have quizzed the doctor about it and would have paid the price on down the road.