You're most welcome to ask. In my case I have spent the last 12 years being told that I'm too young (62 now) to have TKR because they might only last 10 years especially with my weight (19st ish), as far as theNHS are concerned, that is still the case. The NHS used to see me every year to monitor the situation but as it's been bone on bone for a number of years they don't bother unless my GP refers me. Fortunately my BG has always been good and never a problem. I actually went and found a prosthetic that has a 30 year warranty which is being paid for by insurance. I had to write to Smith & Nephew, the manufacturer, to get the name of my surgeon as being someone expert in using the particular prosthetic. I've got a good one, his first words to me were "Mr Jones, your knees are totally ********, we need to replace them as soon as we can". I like him! LOL Should there be any issues with my weight or blood pressure, I'll have an epidural. Seems the noise is OK but burnt bone isn't great.
The physio is CRUCIAL, sorry for shouting but if you don't do it right you'd be wasting time and money and would have very poor mobility after the surgery. I have done a lot of exercise already and to be honest it's kept me on my feet although I do suffer at airports and use a wheelchair. I'm lucky because I know two physios very well, so I'm hoping to call in a favour or two to help with additional physio staying aware that too much is as bad as too little.
I shall be leaving the UK on November 14th 2015 for a weeks "shake down" with the other 5 crew members. The Atlantic Rally for Cruisers as it's known starts on November 22nd and arrival in St Lucia should be December 10th (ish). I've met the skipper and first mate (husband and wife, both qualified RYA Yachtmaster instructors, nothing shabby LOL). So, I'm all signed up.
Thanks for your wishes, so long as all goes according to plan . . . . . . . . My fingers are crossed just in case. So are my toes.
Take care
Graham