Hi. My Havanese girl is 10 months old and is probably going to need knee surgery. She injured her back left side leg when running up the outside stairs when I got her at 6mths. I blame myself because I should have not let her run up them because I didn't know if she was used to stairs. I don't know what grade yet until I see the surgeon tomorrow but would love to hear the pros and cons of this surgery and what to expect years down the road.