Many surgeries here. Going back to 1973. All my surgeries were from sports. Clearly I am my own worst enemy. Totally agree that arthroscopic surgery was not good. Had hip and knee replaced. Need the other knee replaced soon. Tried everything ( drugs, therapy, rest) and there is no magic bullet. 
I know being bow legged was a contributing factor. Playing pro squash pushed me over the edge, but it was fun. I eat well, exercise daily and use a personal trainer and therapist often. 
I have no regrets and if I knew then what I know now, I would have probably not run Boston ( marathon ) or played high school football. 
Still, I'm happy and I know medicine will continue to improve for athletes like myself. Wish I was 23 instead of 63. I miss running. So I walk. A lot.