I almost forgot--I began very carefully torquing my left knee yesterday in class, throwing a roundhouse kick. This is the movement I'm most concerned about since my ACL surgery.
My knee felt fine during class. In the evening, after a short drive in a car, the back of my leg was a little sore, but it felt better after walking. I'm assuming the soreness was from new muscle use, not from any injury, since it went away.
I'm not going to be throwing hard roundhouse kicks while twisting my left leg anytime soon. But I know my physical therapists said I should do "multi-planar" movements with my knee, and this is definitely one.