Hi,
I have different knee problem to you so I'm looking at this from a different perspective.
I am in my thirties (33) and have been told to wait until I'm at least 40 for a full TKR. In the meantime, so long as my wound heals, I've been offered a PKR. Right now, my pain is getting worse and if I can have a few years of not being in so much pain before the TKR then I'm going to snatch the opportunity with both hands.
I'm not saying you should go running into a surgery you're not happy with. But you can always ask your OS about the procedure. If he's had success, he should be able to answer all your questions. It's a hel of a lot easier than trying to find out about something on the internet. If you get the answers to your questions and you're still not happy, then find out about alternatives or ask for a second opinion.
Take care,
Laura x