Hi and welcome to HCM
swelling in fingers and burning sensation could occur due to tight plaster cast or the dependent position of your hand. As after slit of plaster at some places you got relief in swelling, you need not to worry. But you have to elevate the limb and move your finger which helps in swelling. You have to keep watch on swelling of fingers and any numbness
. If it occurs, consult your treating doctor.
Hope this will helps you. Take care.
You can consult me again directly through my profile http://www.healthcaremagic.com/doctors/dr-saurabh-gupta/64132