Hi again,
I've seen a second physio (to get someone with a new ideas and a clean slate). We had a chat about my history, how the injury happened etc etc...
She did a couple of range of movement tests of the left leg/knee and movements to bring on the pain. She thinks it's irritation to the nerve. I've had three session of her mobilizing the T10-12 disc/joints. She has noted my L4 is a little tight but in no way as tight as T10-12 which very sore when she works on them. She's only worked T10-12 not L4.
My question(s) are: can T10-12 becausing knee pain, I thought they were back and chest root nerves? Also why would there be a little swelling behind the knee?

The treatment on T10-12 I don't think is really working, should I give it another couple of sessions?

Any feedback would be most helpful.