I have had 3 types of arthritis for over 20 years now.  I have found that hot baths help quite a bit.  A parrafin bath for both hands and feet are extremely helpful.  You can now purchase over the counter a parrafin bath at stores such as Wal-mart and Wallgreen.  If you would prefer to make your own parrafin bath take 3 boxes of wax as used in canning or making candles.  For every 3 boxes use one full pint of mineral oil.  You can heat the wax and add the mineral oil to approximately 102 degrees.  The mineral oil stops the wax from burning your skin and allowing the heat to penetrate to the joints.  I received this treatment in therapy and was told by the therapist how I could make my own at home.  it works GREAT!!! After melting the wax and adding the mineral oil dip your hand in and out leaving it in the wax only a few seconds.  Dip your hand about 4 times then take a plastic bag such as a bread bag and wrap it around the hand leave it on until the wax hardens and will begin to fall off.  The wax can be put back into the wax/mineral oil mix.  After using the mix on both hands 3 times add more mineral oil as this is the key factor to stop the burning of the skin and what allows the joints to absorb the heat.  I also use it for my feet.  It has helped tremendously.  The other form of help I have found is water therapy.  A heated pool or jacuzzi takes the weight and preasure off the joints which allows movement.  The water therapy and parrafin baths have helped me to not totally rely on a power wheelchair.  I have been dealing with this since 1989.  It may not work for your but it has been very beneficial to me. (please forgive any misspelled words as that is definitely NOT one of my strong points lol)