All I know is from my experience with Kryten. He is now ~7 weeks post op on his left leg, he went symptomatic on it despite the right actually looking worse on the X-rays. There have been some problems, ie the open osteotomy but overall he is now doing much better on that leg than he was before. The swelling is gone, right side is still swollen despite anti-inflamatories but that could be due to increased usage. As long as I can keep him from overdoing it, he is walking better more like a hitch rather than a full limp. This is also on lower dosage of meds than prior to surgery. Also the longer there is a loose fragment inside the joint, from everyone I've spoken to and read about elbow dysplasia the symptoms are caused by a loose fragment of either bone or cartilege, the more chance there is for arthritis to form at an early age. The hardest part honestly has been keeping him quiet so that he can recover. Once his left leg has healed enough to not be at risk I will be getting his right leg done as well because I can tell already that it will be better for him in the long run than trying to prevent him from being as active as he wants to be.