Hi betogovy,
It pains me as well to hear all your daughter has gone through. I'm not a doctor in any way shape, or form, but I'd like to help if I can at all.
A couple questions:
- Did Lili have any equinus contracture (Ballerina Foot) when she lengthened her tibias?
- She lengthened her femurs 7cm? How much did she lengthen her tibias? Do you know her original lengths (or the amount relative to her original lengths)? I realize that as a 10yo, her bones are comparably very short, as we are typically discussing short(ish) adults here.
- Have you determined if it's mainly physical hyperlordosis and not a duck ass position that she walks with because of tightness/insecurity/instability? Does it present when she is not standing/walking? In my own case (and of some of my fellow patients), duck ass while walking can appear because of equinus/tightness AND because hunching over the walker feels more stable..standing too erect feels like one will topple over more easily...especially on weak and broken legs.
The lengthening of the lower legs can increase tightness in the upper (and vice versa). The hamstrings and gastroc/Achilles are inter-connected by nerves and fasciae. Everything works together. Some call it "muscle interdependence", some call it the "Kinetic Chain". She's lucky to be young and should have a lot of flexibility, but it will take time and work to loosen things up.
Does your therapist have experience with these type of issue? There are a lot of great PTs in the world, but that does not necessarily mean they can handle an LL patient.
As 682 mentioned, the varus and valgus can get better over time, but a big factor (for valgus) can be weak hip flexors (at least, it was in my case). Stregthening them through directed PT exercises should help a lot.
Are you currently still in Mexico? If your doc does not have answers for you, it's best to seek a second opinion and more assistance. Was Lili's doctor Santiago Gonzalez or Gerardo Lopez–Mejia? I don't know how far you are from them, but they are both LLRS members. Or, if you are in the part of Mexico bordering CA, I know of a doctor here in San Diego that has experience with lengthening.
I truly hope things get better for Lili soon. My best wishes to her and to you and your family as you go through this.