Hi,Yes Mary is quite right,I usually go on there,i fractured my patella into 3 pieces, and it did require surgery,that was almost 10 months ago.
Things are a lot better now,apart from one or two HW problems,but it is a terrible injury, and the road to recovery is long and hard.
After being immobilised for so long the muscle is lost, as is the leg strength etc,the main aim is to recover from this, and believe me it is not easy,you will experience some degree of pain and stiffness for some-time, but it does get better, do as your OS and PT tells you,and you won't go far wrong.
Also remember,no two injuries are the same, and we all heal differently,and it doesn't seem to matter how old you are,i am doing fine at 10 months post-op, whereas some people are still struggling with their recoveries longer than this, and they are 20 years younger than i am.
So hang on in there,do all the exercises you are given,work hard, but don't overdo it,and you will definitely get there,i wish you the very best with your recovery,and you will get lots of good advice and support on this site.
Good Luck.
Coral