Casey had a planned microfracture as well as her brother had one a week before or after. I know that most of us had surprises,,me, blackbelt, several others.
You need to ask your OS which surgery he has planned for you. Alot of insurance companies will not pay for the more expensive surgeries unless you have tried microfracture first. No matter which surgery you get, they all require a very long rehab.
good luck and keep us posted.