Remember that both arms should only go as far as the "bad" one can in order to keep a good balance. I think that just beginning to move with T-Tapp, even with no arm movements, will help over all because the lymphatic system will be moving, muscle strength will be gained which will help the bones, and lubrication will be taking place. If you are stepping, then stetch your fingers and then clench into a fist. You can do that and keep the hands down low. A gentle "thumbs away" will also active the arms without raising them higher then the shoulder.
Wife for 28 wonderful years
Mom to 7 treasures--6 at home--ages 21, 19, 16 (girls); 15 and 13 (boys); 11 (girl)
Grandma to 2
T-Tapping since 2009