A system for the correction of vertebral trauma, the system comprising: a first and a second guide member (12,12'); a first and second bone anchor assembly (2,4), the first guide member being coupled to the first bone anchor assembly and the second guide member being coupled to the second bone anchor assembly; a pivot rack connected to the first and second guide members (12,12'), the pivot rack being configured to allow rotation of the first and second guide members (12,12') each about a pivot point at the distal ends of the first and second guide members (12,12'); a locking rack configured to prevent the first and second guide members from rotating relative to one another in at least one direction, the locking rack comprising: an elongate locking rack member, a first connector arm assembly connected to the elongate locking rack member and configured to rotate about a longitudinal axis of the elongate rack member, the first connector arm assembly comprising a first connector arm configured to attach to the first guide member, wherein the first connector arm is configured to rotate relative to the first connector arm assembly; a second connector arm assembly slidably connected to the elongate locking rack member, and the second connector arm comprising a second connector arm configured to attach to the second guide member; and a locking mechanism that reversibly locks the second connector arm assembly against sliding along the elongate locking rack member in at least one direction. a first and a second guide member (12,12'); a first and second bone anchor assembly (2,4), the first guide member being coupled to the first bone anchor assembly and the second guide member being coupled to the second bone anchor assembly; a pivot rack connected to the first and second guide members (12,12'), the pivot rack being configured to allow rotation of the first and second guide members (12,12') each about a pivot point at the distal ends of the first and second guide members (12,12'); a locking rack configured to prevent the first and second guide members from rotating relative to one another in at least one direction, the locking rack comprising: an elongate locking rack member, a first connector arm assembly connected to the elongate locking rack member and configured to rotate about a longitudinal axis of the elongate rack member, the first connector arm assembly comprising a first connector arm configured to attach to the first guide member, wherein the first connector arm is configured to rotate relative to the first connector arm assembly; a second connector arm assembly slidably connected to the elongate locking rack member, and the second connector arm comprising a second connector arm configured to attach to the second guide member; and a locking mechanism that reversibly locks the second connector arm assembly against sliding along the elongate locking rack member in at least one direction. an elongate locking rack member, a first connector arm assembly connected to the elongate locking rack member and configured to rotate about a longitudinal axis of the elongate rack member, the first connector arm assembly comprising a first connector arm configured to attach to the first guide member, wherein the first connector arm is configured to rotate relative to the first connector arm assembly; a second connector arm assembly slidably connected to the elongate locking rack member, and the second connector arm comprising a second connector arm configured to attach to the second guide member; and a locking mechanism that reversibly locks the second connector arm assembly against sliding along the elongate locking rack member in at least one direction.