Ufit-Brace Design is a software tool for scoliosis brace design and simulation. Scoliosis is a sideways curvature of the spine that occurs most often during the growth spurt just before puberty. Small curves usually don’t cause problems. But a curve that gets worse can be bad for a person’s health. Very large curves can damage the joints and cause arthritis of the spine. Large curves can make the ribs rub against the pelvis, causing pain. If the spine curves a lot, people might get lung problems.