I have one that was recently corrected:
I was born with something called Femoral Anteversion. Here is a
helpful link from my hospital's website, because it is hard to explain this without hand gestures.
Basically both of my legs were turned in at a degree +30% more than a normal person. So when I would stand my feet would be pigeon-toed and would roll in, my knees pointed inwards, and I could turn my legs out to an extreme angle which would cause most people pain.
I also used to look 'strange' when I would walk, as people have told me.
So my lower body looked completely turned in, or in fancier terms, anteverted.
Last year I got surgery to get one leg fixed and this past June I got the other one done. So it doesn't look like it did anymore.