I`m 5'3 and I wanna gain 4 inches

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I`m 5'3, I've been on growth hormones since I was 10 and I`m now 18, sadly that was the maximum that I could reach, my endocrinologist said that I probably could gain 10 cm (4 inches)
on Femoral LL because my femur is that short, I heard that doing more then 3' is dangerous, if so why? Also I`m thinking on doing in Doctor Paley, would he do a 4 inches surgery?

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I measured proportions on high school and my torso was the same size of a the majority of my 5'7-5'8 friends, 2 surgeries is out of question, too much money, also doing outside of the US is out of question.
Do you think that palley would do 3" and 1/2? I`m actually 5''3 and 1/2 but I never put that on paper