If I am right a good example of new scars forming is....
Have an abdominal opp' to remove something like, say a tumour! well after all the repairs are done, new scar tissue forms internally round the cut area's, thus a tightening up etc, because the normal repair system of the human body is unbelievable, but there is always a but, that's why many peops who have had such opps complain of further pain afterwards.
I think the same prob happens with Ankle probs, ok I might be wrong, but there you go.
There might be no comparison lol!