I was born without any abdominal muscles and a sunken in chest wall. At age 3 at Texas Childrens Hospital, Dr Abel took some oblique muscles and pulled them around to my front all horizontally. He took sutures and did a boyscout basket weave of sorts he said. It helped a great deal, aside from a large scar I had a rather nice smooth abdominal wall. I couldn't do anything like a sit up or such as none of the muscles went vertically. At age 14 I had surgery on my sunken sternum. It didn't help really, they broke it, lifted it with a metal bar that I had in me for 3 months, then they pulled the bar out from my side. It only lifted a small area of my upper sternum and my ribs got very twisted afterwards. I have low lung capacity due to the sunken sternum.I had some tummy tuck type surgery for loose skin at age 17. I had 2 c-sections and delivered 2 healthy daughters. I am having some issues with reproductive organs that will probably require surgery in the near future.