American Heelers Orthopedics (www.orthopedicshoelift.com) shoe lift service has modified and lifted tens of thousands of shoes over the years. The fact of the matter is that an unchecked leg length difference or inequality will lead to back and leg pain. Once the leg length difference is corrected with a shoe lift most people say that their back pain is heavily subdued and it is easier to walk again. Because the architecture of most shoes by design is to fit the foot inside like a glove for comfortable walking, there is no room inside the shoe for an insert. This is why the preferred method of shoe lift modification is to split the sole of the shoe and add the lift externally before reapplying the original sole to the bottom. This looks and feels good.