Q: 

What must be done to shrink the stump?

A :

It must be kept wrapped firmly with an elastic bandage, starting from tip 
of the stump.The bandage should be rewrapped every 6 hours. Otherwise
it can be removed for bathing, but left on when sleeping. In this way
the stump will shrink quickly in 1-2 months. Exercise will also help. 
Avoid letting the stump hang down for long periods as this will increase
swelling. Also avoid flexing the knee and hip for long periods as this can
cause contractures which interfere with gait.