A system for the correction of vertebral trauma, the system comprising: a first and a second guide member ; a first and second bone anchor assembly , 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 , the pivot rack being configured to allow rotation of the first and second guide members each about a pivot point at the distal ends of the first and second guide members ; 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 ; a first and second bone anchor assembly , 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 , the pivot rack being configured to allow rotation of the first and second guide members each about a pivot point at the distal ends of the first and second guide members ; 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. <EOS>