I'm badly scarred after skin necrosis. What are my options?

im having a real hard time understanding neucrosis. not the cause of it but the treatment of it. my doc noticed it the DAY AFTER full abdominalplasty. condition worsened over 3 weeks. I was on oral antibiotics and sylvadine cream. 3 weeks later, it was so bad, and got debrided by p.s.. within 48 hours I was flown out .. wound vac placed on. was hospitalized for 17 days.needed skin graft. I am horribly scarred and wondering what a doctor should do once they notice skin neucrosis.. someone help!!!