Calleigh had surgery on her left knee [LP] a couple of years ago. I got different opinions from two vets. I took her to see an Orthopedic Surgeon that is a colleague of my best friend. He does surgery in her clinic quite often. He said she had grade three LP and suggested she have surgery. Calleigh didn't have any symptoms that I could see. The surgeon also said she would need to have her right leg done in a couple of years. It looks like it's time to have it done pretty soon. I can actually feel her right knee pop at times when I pick her up. I'm hoping we can wait until after the summer. She loves to walk too. I know this a lot for you to deal with. I hope your pup does well. Keep us posted as to what you decide. I'll be thinking about the both of you. Calleigh did just fine with her recovery.