Minimally Invasive Cross-link: A Cadaveric Feasibility Study with a Working Prototype |Biomedgrid

Spinal fusion involving posterior instrumentation with rods and pedicle screws has been common surgical practice for many years. Traditionally, a cross-link connecting the vertical rods can be added to the construct to increase stability in multiple planes of motion. More recently however, minimally invasive spine surgery (MISS) techniques have gained traction without accompanying technology or methodology to place a cross-link. Herein we describe a novel technique of placing a cross-link percutaneously, accommodating both open and minimally invasive spine fixation. A single cadaveric feasibility study was done, demonstrating the patented technique and instrumentation used in successful deployment of a percutaneous cross-link. The cross-link was successfully deployed and secured to the posterior fixation construct using a fluoroscopy-guided posterior paramedian approach. This study demonstrates that minimally invasive cross-links can be successfully incorporated into both open and minimally invasive posterior fixation procedures, providing added stability while leaving the posterior midline anatomic structures intact.