REPLY TO: "Hi all...I live in australia and had the above surgery in jan 2010. Its been 5 months now and i still have difficulty in walking nornally....."
I had both of my knees done with this procedure this year, I wasnt made to weight bear straight away but as soon as I could I did because the brace caused pain when I couldnt move my knee about, I was prone to cramps.I dont have any of the symptoms you are describing.
I hope you didnt start physio straight away and that you let the screw and the relocated bone fragment (which the tendon is attached to) set. If they moved while setting, this could be very problematic, and all your work recovering may have been undone. The setting stage for me was the first 6 weeks, All I was allowed to do was start walking again, slowly... and no baring weight on a bent leg AT ALL. Then I got the okay to start physio.
When you have the procedure your muscles "go to sleep" as my doc said, and when you start to heal you have to retrain your muscles and it can take years, you physio may have been teaching you the wrong excersises, unlikely but possible. Because your retraining your muscles, long periods of walking will be painful in both the joint and the muscles, It can take years to be completely pain free, you just have to work at it.
If your experiencing extreme stiffness and soreness still, ask your doctor about it and if they dont give you a real response, seek out another doctor who specialises in bones and muscles and how they work together, It may be a matter of retraining the way you walk once again.
What you considered normal life before might take a while to regain.
I hope that one of my answers is enough to help.
I also hope your pains work themselves out as soon as possible.