Your scar has no contracture, and according to the photos, it should have no function. Therefore, your problem should be to solve aesthetic problems.
At present, the more advanced method is to implant a dilator (a kind of water sac) under the good skin around the scar. Human skin is very elastic. After the skin expands, remove the scar and pull the expanded skin over. But your area is too big to be solved by one operation. You can call for details.
Speaking of burrs, let's first understand what burrs are. Burr refers to the extremely fine microscopic metal particles formed on the ma