If treatment does not act effectively moderate, hypertrophic scars usually manage to be improved surgically. The plastic surgeon removes the scar and closes the incision to heal with a pattern less noticeable. Surgery achieves be done either under local or general anesthesia, depending on the location and extent of the scar and other factors such as patient preference and surgeon. Achieve require steroid injections during surgery and at intervals during one or two years later to prevent the rebirth of hypertrophic scar.