@burcinc-- Absolutely! I have done the ginger bath several times, it's amazing, you should try it. All you have to do is add grated ginger or ginger powder into your hot bath and get in. Let me warn you though, you are going to sweat a lot. That's actually how the ginger bath works, it helps remove the toxins from the body through sweating.
I do the ginger bath when I'm down with a cold or flu or if I'm extremely tired after sports. I'm sure it will help with your arthritis too because I think arthritis is the inflammation of joints right? The ginger bath is really good for inflammation. My mom had my little brother do the ginger bath when he fell and got hurt during his soccer game. He was practically all better the next day!
I know that some handmade organic skin care brands carry lotions and balms with ginger extract. Why don't you just check with them, or look in the skin care isle of markets that sell natural products.