In Turkey nearly none of the ladies with leg length discrepency use build-up shoes. They even do not raise the heel of the shoe and walk with a charming limp. Unfortunately this may cause permenant deformation to the body. Following are photos of Marlene. Her shoes are lifted by her boy friend John who is a short leg admirer as I am.
According to what John, boy friend of Marlene told me, Marlene has a 2" (approx 5 cm) leg length discrepency due to polio. She was able to balance herself by pelvic tilt when they first met. John, being a short leg admirer, recognized this immediately of course. Now John builds the shoes for Marlene so that she need not tilt her pelvis any more.
That is a shoe lift performed by John!
On special occasions you may have a sexy pump build up for you (but not for walking long distances).
In cases of leg length discrepencies greater than 3" (approx 7.5 cm) shoe lifts become rather heavy therefore braces are used to compensate the short legs.