Development of PE after Nuss Surgery/Procedure

Not even a Nuss-operation guarantees that pectus excavatum does not come back. Why?

 
The fact that PE in some cases starts to develop once again after surgery fits very well in to my theory that development of pectus excavatum is caused mainly by outer forces. If PE would have been what can be classified as a deformation that was PURE genetically, the chances for it to relapse after a Nuss-procedure would be out of the question if you think about it logically.

My theory says; it is both environmental and genetic factors that causes it to exist.

Why is it out of the question?

“When the metal bar is removed the diaphragm has a normal environment to work in and it can produce a strong (normal) force under the sternum that makes it impossible to cause the sternum to fall back” (it would have been that way if PE was PURE genetically).

If one continue to do what caused PE to exist in the first place it may affect the diaphragm once again to make it malfunction. As long as the metal-bar is in the body it can help to withstand those outer forces but once removed, the body is “on its own” again.

That means that my theory (what I did to improve it 90%) can make it impossible for PE to develop once again after a Nuss-surgery (if it is followed 100%).

I also believe that people that plans to undergo surgery will benefit from my theory because; the more you can fix it yourself, the less complicated the procedure to fix it surgically will (most likely) be. I have read on many places on the internet (ask your surgeon if you plan to do it) that surgery becomes more risky with severity of the condition.