By using “Quadrilateral Socket” at the top of weight bearing brace instead of the lumbal corset, we could have following advantages.
1) Improvement of gait
Hip joint is not fixed, so patients need not swing pelvis. Gait pattern looks closer to normal gait, furthermore, we can expect increasing of blood flow of bones.
2) Improvement of sitting position
Patients can flex hips, so sit very easily.
3) 10-20% lighter than the lumbal corset types
Problems are that we need prosthetic techniques in fabrication and still the price is cheeper nearly 20% according to the Japanese Welfare Law for Disabled.