Keep as active as you can and still keep using your knees. I have arthritis everywhere and have been told to keep my joints going and keep using stairs as long as I can even if it hurts. I have been told that by doctors and consultants.
JJ this worked for me, here is a recipe, it's nothing mysterious, natural anti inflammatories. I have been taking a shot glass of this every day for the last 7 years:
https://thumbsnap.com/X8aC1hpD
have you got straight stairs lottie? Before my joint replacements i rented a stairlift for a year - it was great cause it gave me more nergy to do other stuff rather than reserve it for the stair journey
Bednobs, no our stairs are not straight they turn and were purpose built. It would have to be a one off stair lift and would also mean house alterations, so we are talking thousands. And I am quicker than a stairlife. On tired days i admit going up monkey style. Besides that the stairs are in me middle of the room and would be totally out of place and really spoil our old house which is over 250 years old. The original staircase was really steep and in a cupboard! ;0)