I guess that skyline x-ray could help with the tracking question after all.
I will try get that angle if it helps.

Now, about my eagerness to find out if I got CP or not - well, I just want to rub it in the face of all the doctors that told me I had to stick to straight leg strengthening for the rest of my life.

Also, I've been taking a glucosamine/chondroitin/MSM supplement for a month, and I was told it might be causing part of the pain, so I'll stop it since there's no point taking it if I don't have actual knee tissue issues