Hi, i’m a physio so i can pretty much help you out. You will get a rehabilitation program after the surgery. Usually when all goes well it take about 6-7 weeks and all is good. I would recommend that you start yoga maybe and with your physio/doc advice when you are able to put all your body weight on one leg without pain. Make sure you have no sign of inflammation either. Since you won’t have any meniscus you’ll have to be very careful when you lock your leg. Make sure you are not hyperextending that knee at all time. you don’t want to put too much stress on your joint like that. You want to protect it.
When you start yoga, do tell your teacher about the surgery you had. You do whatever you can for that first class, don’t push yourself. it will be very important to note if your knee has any signs of inflammation after class. Swelling, hotness, redness… Don’t forget to ice it.
If you have done Bikram before you’ll even know yourself when to start again. Your balance will be very bad at first but it will help strenghten your knee in a lot of ways.
hope i helped a bit