Upcoming TTO

Hi Everyone!
This is the first time I am writing. I have an upcoming Tibial Tubercle Osteotomy coming up on January 25th. Along with that they are doing MPFL reconstruction with hamstring allograft. I previously had both my knees done when I was 13 and 14 years old. My knees were dislocating numberous times a day. My mom and brother both had the same problem and had surgery when they were around that age too. They both do not have further problems with their knees. The problem i am having right now is my knee is malaligned (I have a hard time going down stairs because my knee doesnt run on track) Its impossible to wear a high heel and go down steps. It also dislocates too but not as much as it did before my surgery when i was 13. My other knee runs on track a little better but still can dislocate whenevever i move a certain way and am not careful.
I also have severe arthitis and take 2 50mg tramadol daily. Can anyone tell me if they have gotten this surgery, what it was like for recovery and mainly about the screws. My doctor said i would not need to get them removed. But ive been reading this website and everyone talks about not being able to kneel because of them? Please let me know how the screws effect you. Thank you very much