An orthotic device (10) that may be particularly effective in the treatment of scoliosis comprises a torso section (20) and a resilient reinforcement (40) attached to the torso section. The reinforcement extends diagonally across a front and/or a rear portion of the torso section between a first attachment point (51) at a first side of the torso section and a second attachment point (52) at a second side of the torso section. At least one of the first attachment point and the second attachment point is locally indented into the torso section such that the reinforcement is stretched when device is donned a patient, thereby applying a force to the patients torso.
