I had the scope and shaving of the cartilage behind the kneecap. THe surgery was successful for about 3 years, some cartilage did grow back but unfortunately I have a tilted knee cap which continued to damage the cartilage. I was really enjoying life after surgery three years of no pain and I was able to run, hike and jump with out pain and then one day I had an injury to my knee which damaged the cartilage. We are tring the Rooster shots now I will have to wait and see, the Dr. wants to perform lateral release if this does not work.