Debbie - I had similar surgery a few years ago. Mine was repairing cartilage and shaving off some bone after being hit by a door. (big ass door)
After 6 months of therapy and several cortisone injections I agreed to the surgery.
The first few days after were pretty bad in the pain department but morphine does wonders...
I now have full mobility, no pain, and the scar is not bad even though I had open surgery.
I even learned to water ski three months after!
Hang in there. It will be over before you know it and just think of all the sympathy you will get while recovering.