You have now received a circular plaster cast which due to reduced mobility can cause swelling and bluish discolarations of the fingers/toes.
Therefore it is important to prevenet swelling by keeping the extremity elevated for about 10-15 minutes above heart level several times during the day and by exercising your fingers/toes frequently.
During the night, your hand/leg should be elevated for example by means of a pillow.
Occasionally, the plaster cast can cause problems due to pressure why it is important that you are aware of paleness or numbness of your fingers/toes.
If in doubt, please consult your GP, the Emergency Department or the Ortopedic Out-patient Department.