Page 6 - Zavation Z-Direct Lumbar System with DSG Tech Booklet - Hensler 2019
P. 6

Zavation Spinal System



                                                                         Surgical Technique



























                                                                  Surgical Technique (Open)


                                                           Preparation of Pedicle:
                                                           Once the surgical approach has been completed and the
                                                           pedicles identified, the pedicle is exposed using a
                                                           rongeur or burr. The pedicle entry point may be
                                                           prepared with the Bone Awl.


                                                           Preparation of Pathway:
                                                           A pathway is created with the Straight Bone Probe or
                                                           Curved Bone Probe.  The Bone Probe should be in
                                                           contact with the bone at all times. The concave side of
                                                           the tip should point medially. It is inserted into the
                                                           entry hole and advanced into the pedicle with a series
                                                           of limited rotational movements and firm but controlled
                                                           pressure. The Bone Probe will follow the path of least
                                                           resistance (cancellous bone) and will compact the
                                                           cancellous bone of the pedicle. In the event that
                                                           resistance is felt, the entry point and trajectory should
                                                           be re-evaluated. The Pedicle Probe is laser etched from
                                                           25mm to 60mm in 5mm increments.  These increments
                                                           represent the depth that the Bone Probe has been
                                                           inserted as well as to help determine the proper screw
                                                           depth.


                                                           DCR 234                                ST-002 Rev 4
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