Thanks for the query
What exactly has increased by 20%?? And also what exact help do u need from us?
For the pain i am sure he is on analgesic
prescribed by his orthopedician.
I am assuming that the necrosis
has increased by 20% which is a bad thing and it might also explain the increase in pain.
I strongly suggest u take second opinion
from another orthopedician for the same.
Have a healthy living