Construct-construct “rail technique” decreases screw strain during spinal deformity corrective maneuvers: a mechanical analysis

Performing SC and CB across an accessory construct-to-construct lateral ("rail") rod resulted in significantly lower strain on individual pedicle screws adjacent to a simulated spinal osteotomy compared to traditional SC and CB. As such, the "rail" may lessen risk of screw pull-out and screw plow during maneuvers to correct spinal deformities. Future work focused on building upon this controlled study in cadaveric specimens will be important to validate these findings in more clinically relevant scenarios.