Our prayers are with you Robert.
I had something similiar, torn cartiledge inside my knee. I put up with it for about four or so years before it got where I couldn't walk.
My surgery was outpatient, with three scope entries in the knee. AFter coming home later that afternoon, and sleeping off the anesthetics I was up and around the next day, on crutches. All went easy as pie.
Hope yours is as easy.
AJ