RICE it for now and make sure you bring this up with your OS in your follow up appt, do your isometric quad excercises for the time being though

best of luck, Tony

Another update, saw the second opinion consultant yesterday as per usual with the NHS the consultant was not there so saw the Registrar. He has arranged for an MRI scan later this month, he feels there may be a tear somewhere as my knee is locked. He has promised me that I will be seeing the right consultant next time, I discussed what could be done for the instability of my knee such as Troclear resurfacing, he didn't seem to know much about this procedure, but I will discuss this next time with the right guy, hopefully.

I had a medial meniscectomy on my left knee September 2011 and suffered similarly after the first surgery as you where normal walking was impossible. They generally give you two months to get back to "normal" but I knew after two months I was far from normal, so I made an appointment to see a second OS. I made sure the second OS was a knee (only) specialist. He advised a second (revision) arthroscopy in March this year.

Things have improved greatly since then but it is a long journey.

My advice is to make sure you exercise - stationary cycling is particularly good (no weight bearing pressure) and it gets the blood flowing. After 20 minutes on the stationary bike the blood is pumping so well around the body that I can walk around virtually normally and forget I had the operation.
Also make sure you see a physiotherapist regularly, they know their stuff - particularly if you are walking irregularly on the operated leg as this will generate muscle imbalance and tightness.

As you say the most difficult position is fully extended (locked out) leg so this is the last piece in the rehabilitation jigsaw - concentrate on everything else first (strengthening quads and VMO etc).

Don't worry other people have been where you are now so there is hope!