Spinal pedicle screws are placed into vertebrae from the same approach and the same anterior, anterolateral or anterior/lateral exposure that is used for an anterior/lateral spine operation, during the same surgical procedure as the spine operation. Once the anterior spine operation is complete, pedicle screws areplaced into the vertebrae with a front-to-back trajectory, in a generally anterior, lateral, anterolateral, or contralateral trajectory, avoiding the need for a second operation exposing the posterior spine.
