Thank you for the reply! I've had the cyst removed. The surgeon said that they think they got it all and that it wasn't attached to the knee joint (I'm not totally sure what that means but he sounded pleased).

I've been told that I need to keep a leg brace on for two weeks. The physiotherapist told me to just tense my thigh muscles by pulling my toes towards me and trying to push my knee downwards. Is this the only thing i can do because of the stitches on the back of my knee joint?

Thanks again.