OK, maybe you coudl look for lymphatic massage...that woudl be a place to start...also just pumping your hands..bending them up and back out can help the circulation in your arm. Make sure you are doing something to keep range of motion...just go as far as you can several times a day focusing on trying to get some blood pumping.

a good PT might still be able to help you work that out, mine does with some gentle massage and ultrasound to warm up the stuff and massage to move it around. The main drain to the lymph is at the base of your neck, very close to the BP...you can also pump your head...by bringing chin to side of chest to help that drain work more effieciently.