I am fully recovered from the operation you performed on my back a couple of years ago, and am enjoying my rowing as much as ever before.
My back was 100% back to normal, with not a trace of pain or sciatica, about six months after the operation and since then I have been enjoying a full life with no back issues at all. Of course, I now have to do lots of Pilates exercises (you probably remember that my wife Sue was pretty keen on that!) but that is a small price to pay for being fully healthy.
I do thank you again for fixing my back: there is hardly I day goes by when I do not offer up a little prayer of thanks for you excellent work.