I got 1 cm in surgery and I'm perfectly fine.
So, that means all your tissues (except bone, which is cut and with their halves not in contact) including nerves, were stretched an entire 1 cm in a couple of hours?
Did the doctor explained you why this wasn't a medical or risky problem previously? (If we were joking I would remind that there were medieval torture devices that did the same).
I don't understand the process, especially if (hopefully) you were not in excruciating pain after surgery and anesthesia and also after painkillers effect fade away...