An orthopaedic brace (20) for the correct anatomical locking and support of the backbone comprises a semirigid dorsal structure (21) with a vertical extension, closed inside a casing, having a conformation corresponding to a backbone, allowing the trend thereof to be followed and the backbone itself to be supported, the lower part of said dorsal structure (21) being connected to a lumbar strap (22) that can be fastened at the front to constraining means in turn connected to the upper part of said dorsal structure (21). Said dorsal structure (21) and said lumbar strap (22) are associated with each other through a rotary junction element (23) configured for the retaining and mutual rotation on one plane of the dorsal structure (21) relative to the lumbar strap (22).
