All those things are important to you, but - IF this new doctor is into sports medicine, he may not be the expert on knee replacement that you need. How many knee replacements does he do in a year? Sports medicine and joint replacement are two very different specialties. With your history, you desperately need a surgeon who will "do it once, do it right". You don't want to choose a surgeon because of his attitude about pain relief, only to find that the surgery isn't successful and you have to go through a second surgery. That's also a reason why having a total knee replacement , not a partial, would be a wise choice for you. PKRs inevitably, sooner or later, have to be revised to a TKR - some even within the first year.