Has anyone had a problem with scar tissue developing rapidly after surgery on their entire hand. What have they done about it.

I had the surgery on my ring finger of my left hand in October/ 06 .After he cast removal I was told to bend my hand and change bandages 3 times a day .Stitches broke and were never restiched . The resulting wide scar( at the palm and the two joints above it are like hard leather ) prevents my hand from flexing to the palm eliminating my ability to play guitar -- my work .Searching for alternatives on the internet I wonder if anyone has used Potassium Iodide mixed with DMSO to help break down these scars ? There is still nerve damage and edema in the ring finger .