I'll be honest in saying the hardest part in getting back is the patience required. Once off the pain meds, the leg never hurts and is just frustrating because you want it to get stronger faster than it wants to.
I know people that have had knee surgeries and they lose mobility and have constant pain and swelling from extra use even years later. I honestly think that after all of the time it will take to get to 100%, we won't have those struggles like those with acl or mcl repairs.
Stay patient and when the time comes, be motivated to do all you can to get it right!