skin flap problem

I had surgery done around a year and a half ago, having a skin flap done. They took the muscle and oval chunk of skin from my thigh and moved it up to my side. It healed nicely and had been doing fairly well, until lately I've noticed that it has become more and more droopy looking. It seems like it is heavy and pulling down on the skin around it. Is there an easy way to fix the "droopyness"??