Knee Surgery- Fractured Patella from stress?

I am John, Hi.
I just had knee surgery about 2 weeks ago. I'm going stir crazy not being able to train right now.
My story is that I am a Triathlete that injured my knee during a triathlon,and would not give up. I continued to train harder than ever, and went to take part in a triathlon that my 19 year old son really wanted me to do with him. I got thru the Swim and Bike legs,and when I got ready for the run leg, I could not run,and hardly could walk.Thats the first time I have EVER had a DNF. I tried to ice it and go on. Eventually it got to where I was in pain a lot more than not. I saw the Dr. He said those most dreaded words... Surgery!
Well, I said No! I thought with time it could heal on it's on. but it didnt. After a few months, I went back to the Dr. And waas scheduled for surgery.
He said it was a stress fracture and he needed to do a bone graft from my shin bone to repair the pateller. And also put 2 pins in it.
After surgery, He told me he had to resurface the back of the pateller also.
I am now in a hinged leg brace. It has only been two weeks, and I am still not sure if I will ever run again.
Has anyone else had this problem, Did you ever run again? How long before you got full range of motion afterwards?

I would appreciate any input or insight,
Thanks,
John