Just to come back regarding my 12 weeks recovery: After 8 weeks I was given the ok for driving a car respectively my motorcycle (which is a heavy piece of iron). The restriction for not flying until 12 weeks after the surgery was not only the point regarding walking . The AME wanted me to be fully recovered for ALL duties as pilot, specially the task regarding an evacuation.
Please think as well what might happen if you continue without the treatment. In my case, the AME would withdraw my medical due to the year-long strong medication I had to take on a daily base, just to be able to survive without pain. One more thing: You are now on the point of no return and the pain will go into a spiral dive if you are allready considering to get a cane....
You have only one side to change, that might give you the chance to recover faster. Talk to your doctor and tell him about the situation.