I have osteo in knees and thumbs.
Posture:
Now using an ergonomic keyboard and an ergonomic mouse.
I’ve also learned to be extremely careful about posture, because it has a definite knock on effect.
My chair has a lot more adjustment than a normal office chair, and can be adjusted to perfection. Rated for 24 hr use (if necessary) Seat height and forward tilt. Arms up and down. Back tilts and moves up and down too. Entire seat rocks and the locks in any position. We bought it when I moved to working from home a few years ago. I could have bludgeoned a ‘fitted’ chair out of my employer, but it would have taken months. Instead, we ordered it on amazon prime and I had it within 24 hrs and its MINE. Good posture reduces the pain significantly.
Diet:
I have also discovered (through various elimination diets and reintroducing foods), that several foods trigger a flare up.
So I avoid those foods like the plague. Potatoes, gluten and tomatoes are the worst. This reduces the pain significantly.
Supplements:
After some pretty extensive research I decided that, for me, in my situation, I take glucosamine and chondroitin, collagen, bone broth, turmeric and black pepper, and cbd oil. I also take vit D3 and K2 and a few other supplements, and can’t always remember which does what
The cbd oil is, far and away, for me, a FAR better pain/inflammation relief that any ‘pain killer’ I have ever tried.
It is also a fine balance between staying active, with mobile strong joints (well, as strong as poss), and overusing the joints causing progressive damage, inflammation and requiring rest.
Edited to add: I also have an electric heated pad 30cm x 45cm which I can wrap around my knees, or rest my hands on. Love it. It eases the stiffness brought on by cold, and makes a huge difference.