hi Sanja
A lot of these questions should really be addressed by your treating therapist, as they have assessed your knee and know the state it is in, and probably seen x-rays etc. Some general answers however are that the majority of healing takes place in the first 3 months, with further small amounts of bone-remodelling happening for around 6 to 12 months post injury. The main thing that takes a long time to come back is the full strength in the leg muscles, particularly the quads. The effects of pain and swelling inhibit or limit the amount of activity in the muscle, sometimes for even a year or two post-injury. So it's really important to keep those quadriceps muscles working as much as you are allowed at the moment, and as much as you can once you are given the all-clear (again, your treating therapist is the best at giving you which specific ones to do). Regarding limping, it's quite variable. Some people find they can walk really well straight away after they are allowed to weight bear, for others it takes a while. Once you are allowed to weight-bear, the sooner you can practice and correct a normal walking pattern the better, as the brain soon learns to pick up incorrect patterns. When you can weight-bear, you are better to take things slow and do the walking correctly, rather than try and rush along getting it wrong and doing the wrong pattern.
Overall though, if you do as instructed then there is every chance you will have an excellent recovery. The main thing I would suggest is to listen to all instructions, try and find as much patience as you can as it can be a long haul, and work those quads! Sorry it's not more specific, but to tell you otherwise would be unprofessional without assessing the knee first.
Hope that helps some and good luck with the rehab.
Kind regards
Andy Schmidt
www.albany-physio.com