The cold really affects arthritis so on that level i think they’d help. But at the end of the day wearing anything on your hands will force them to work that slightly bit harder. However saying that, they may restrict your movement which could help.
I have no personal experience myself. I have a good friend with rheumatoid arthritis (i'm not sure how they differ to just arthritis) and he has tried them to no miracle relief.
Thanks for the link Sqad, I didn't realise the question was so recent, so TA for that and for anyone else who answers, I'm sorry for wasting your time - and it looks like I'll just go on 'suffering' with the osteo and rheumo types, eh.
My Vet told me to give it to my elderly dog when he developed Arthritis in his shoulders. It seemed to help. He was pretty active until just before he died.