It just came up in my mind but, feet helps with balance and stuff for people, with generally taller people having bigger feet than shorter people because of this (yes I know there are some short people with huge feet but not my point).
The average ratio is 6.6 inches of height for 1 inch of feet size, will people with small feet but already taller than said ratio suffer any problems from LL? for example a US size 8 person would be given an average height of roughly 166cm, if you were to go 170cm or above (don't get into the unsafe discussion stuff cause this is just hypothesis) would the lengthened patient suffer balance issues, would it depend on their initial leg length proportion, or would they remain unaffected?