I have been using my right hand to excess lately, first with very hard work on the allotment using impact with tools, then spinning and knitting on tiny circular needles
I have gone back to using a very good hand brace at night, on my right hand. It is large and firm and has metal supports up the palm and the back and the thumb. I bought it from a physio supplier, around 15 years ago and keep it in my supports `just in case` box
Lately I had slept with my hand curled and consequent tendon shortening which caused painful spasms in my fingers overnight. I have been using this splint for just 3 nights and already there is a big improvement. I will carry on with this brace for another week and then transition to warm support gloves at night, I have some with longer supports for fingers
I remember being almost panicky about the developing osteo arthritis that I saw in my right hand but I nipped it in the bud.