Thanks for all your answers and encouragement. Ok, so I was doing the elevating wrong - not high enough. I do not understand the use of pain medication though. Yes, my knee is stiff in that I cannot bend it properly but it is not at all painful. When I say high pain tolerance I don't mean I'm sitting here, gritting my teeth, thinking I can handle this. I mean I feel absolutely no pain whatsoever. In the hospital, they gave me Tramadol on the second day when I had a pain surge and it nearly knocked me out. I stopped taking painkillers because I wasn't in any pain and I don't really get why I would want to put such strong drugs in my system because my knee is stiff? Sorry if this sounds a bit blunt, but I have overdosed before and have had problems with addiction. I will not take drugs if I do not need them. The swelling is mainly at the back and came after the last physio session. The front looks like the slight picture. And it is not painful either, just annoying because it was not there before! Re the extension - measuring like above sitting on the floor I get 0. I will try and get someone to take a pic of flexion but I don't think I'll be seeing anyone before the weekend. Yesterday I tried my own test, sitting on a piece of furniture and marking on the floor where I could bend my knee back to comfortably without any pain. Today I did it again and I have an increase of 5 centimetres which seems like a lot for overnight. Skipped physio and stayed in bed all today, so going to do the same today. I still find the lack of flexion incredibly frustrating though. I have always healed really quickly and never had issues with pain. So I don't understand why everything else seems fine - no pain, extension ok, walking unaided - and yet the flexion is bad. I did not have full ROM before, lost it after my second op in 2013. Lost my ACL around the same time (it was hanging on a thread anyway) and since then have never been able to sit back on my haunches or kneel fully on the left knee so I don't know if that has anything to do with it. But I could certainly do a lot more than I can now! I'm just worried it's never going to come back and have a huge dilemma about succumbing to physio, where I know they think what they're doing will help as they're getting results with other people.