A device for spine correction, in a particular human spines, has a keyboard with numerous adjacent segments comprised of opposed back supports. The keyboard (3) has at least one set of cooperating segments A, B and C supported on curved arch elements which bias a patient back in engagement with the keyboard toward a desired back configuration. The device includes a support frame (1), and a relatively movable mobile frame (2) on which the keyboard is supported. A measurement system includes a controller (49), a server (50) and a screen (51). The controller is connected to sensors (26) which determine rotational positions of the segments. The server provides outputs from the screen (51) responsive to the sensed data.