Thermoplastic braces such as the TLSO Boston brace places pressure pads over the convexities of the thoracic and lumbar curves in attempt to correct lateral deviation and rotation.  However, Dr. Chêneau of France in 1979 found these general correction principles insufficient, and as a result, he designed a Chêneau brace that endeavours to treat every aspect of the complex 3D deformity (Rigo and Chêneau, 1997).  The Chêneau brace is defined as a thermoplastic brace modelled on a hyper-corrected positive plaster-cast of the patient.  The general correction principle is that of detorsion and sagittal plane normalisation, which would correct the coronal and transverse planes, resulting in some elongation of the spine, without any significant distraction force.  During the past few years, Dr. Rigo of Barcelona has furthered the development of the original Chêneau  brace by combining his new classification of scoliosis.