Medical Devices and Medical Equipment Design TiLock Modular System Spinal Fixation by Genesys Spine The Genesys Spine TiLock® Modular Spinal System uniquely addresses the challenges of posterior fixation by providing surgeons with the flexibility to secure difficult operative levels. Increased options for distraction, greater visibility, and more thorough decortication may be achieved by allowing the surgeon to first place a low profile screw. Designed to minimize retraction and disruption of surrounding tissue while maximizing fixation in denser cortical bone, the TiLock Modular Spinal System can be implanted via a conventional open approach, midline, or minimally invasive.