A back brace is a device designed to limit the motion of the spine in cases of bone fracture or in post-operative spinal fusiona, as well as a preventative measure against some progressive conditions or to correct patient posture. Common back braces include: Rigid (hard) braces : These braces are form-fitting plastic molds (historically leather) and rigid (typically metal) supports that significantly restrict motion by between 50 and 65% while rotation is limited by up to 70%. Soft braces : Elastic braces that limit the forward motion of the spine and assist in setting spinal fusions or supporting the spine during occasions of stress (for example, employment requiring the lifting of heavy loads) Semi rigid braces : Semi-rigid braces combine elements of flexible and rigid braces within one overall design. This is done by adding rigid supports or additional stiff padding and straps to the body of a flexible brace. Sometimes these added rigid supports are removable, allowing the patient to customize the level of stability to their unique needs. Bracing for scoliosis Back braces are prescribed to treat adolescent idiopathic scoliosis, as they may stop the progression of spinal curvature in a growing child/adolescent. As of 2016, the Scientific Society on Scoliosis Orthopaedic and Rehabilitation Treatment (SOSORT) recommends bracing "is important, but does not have to be applied to all patients with this specific need" for idiopathic scoliosis during growth. Multiple studies have provided strong evidence of bracing as an effective conservative treatment for children and adolescents and may also help decrease the amount of curvature in the spine; with results lasting several decades following the end of treatment and brace weaning. A variety of brace styles are available; the Boston brace is the most commonly used brace for adolescent idiopathic scoliosis (AIS). It is important to note that in-brace correction has been found to be directly related with treatment success, suggesting in-brace correction should be maximized; thus individualized custom braces which maximize in-brace correction show better results. Other designs include the Milwaukee brace, the Charleston bending brace, the Peak Scoliosis Bracing System, and the SpineCor (a soft brace) in the United States, Canada, and Europe. In Europe, however, the SPoRT and Cheneau and Crass Cheneau braces are also used. There has been considerable research and information published in reputable journals on back braces for scoliosis. Issues like patient compliance with treatment, the psycho-social impact of brace use, and