Went on a test ride today, that is, tested my back after the Polish
physiotherapy. Was surprisingly OK, apart from the end when I had to
push the bike back into garage - slight discomfort in the knee.

Hope Mrs Professor doesn't find out :-$ (did my test ride when she was
shopping).

prof, glad it worked for you mate. it may mean you doing it on a regular basis. but if it works for you, good for you.

the problem with sciatica is( from what i have been through and many others from talking to them) that you can reduce the pain level and longevity with regular excersise but it never goes away.

treatment generally seems based on keeping muscles toned as opposed to no excersise at all. i know of friends who have been reduced to tears because of the pain and wish i had the perfect answer/remedy.

i definitely have to choose a bike that is not too radical a riding position on my back or legs which is probably why the retro/cbr600f bikes have been the most comfortable for myself over a long journey.