Dome,
A poster in the first physical therapy place I went to pretty much summed it up. It had a diagram of a knee and said, "If misery loves company, this must be a happy place."
After a major knee injury, things can get a lot better, but they are never really the same again.
Greg,
Are you talking about the two "cords" that are to the rear sides and mostly above the knee? I believe those are the tendons connecting to the hamstrings. I'm pretty sure that has happened occasionally to most people. I know it has happened to me. Still, I would think it happening...
Ari,
My knee history is essentially identical to yours. Interesting that you are told not to do leg extensions. That has been a major part of my therapy. Maybe you have more severe meniscus damage, though mine iis pretty severe.
Oh yeah. Ibuprofen does wonders. If you ever feel pressure or stiffness in your knee after working out or when the weather changes, you will probably benefit from icing it. I can go into effective ways to do that if you need. You have to ice it thoroughly, which can be a bit painful, but a...
I have too much experience with knee rehab. First suggestion, don't ever do free weight exercises like squat thrusts if you have had any knee problems. Exercise bike is a good way to get warmed up before the heavier work. Beyond that, stick with weight machines like leg presses, leg lifts...