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This study investigates the relationship between pelvic parameters and the ideal trajectory for S2 Alar-Iliac (S2AI) screw placement in patients with degenerative thoracolumbar pathology. It finds a moderate inverse correlation between pelvic tilt and the cephalocaudal screw trajectory, suggesting that as pelvic tilt increases, the ideal screw angle becomes less caudally oriented. These findings may enhance the safety and efficacy of free-hand S2AI screw placement by allowing surgeons to better account for

Author

Shashank Krishnan

Language

EN