Now, apart from higher chance of getting bone infection, what are the other disadvantages of this method on femurs that might result in bad outcomes disregarding ugly scars it leaves which is not an issue and can be fixed later if needed.
Assuming one does no more than 7 cm, can he recover his ROM and mobility fully after a year or two post surgery?
There are many users here who did LON femur, some of them did more than 7 cm and according to them, they are fine now (Meck comes to my mind who did more than 9 cm with LON femur).
Assuming one has to wait for many years in order to afford PRECICE nails, is it justifiable in that case to go with LON femur in order to become taller significantly earlier?
Poor man's double LL option:
Do LON femur for 6.5 cm in order to remain in safe zone and after 6 months post surgery and adequate bone formation, go with pure external tibia for 5.2 cm. After about 10 months post tibia surgery, which means 16 months post femur surgery, you remove the nails from femurs and external frames from tibia in one surgery and stand at 11.5 cm taller with perfect interlimb proportions and biomechanics.