Frontiers in Bioengineering and Biotechnology • Vol 13
Mechanical optimization of plate-screw interfaces in variable-angle locking systems: a parametric study
October 2025 • Chi Lin, S. C. Wang, Kuan-Chung Lin, Michael Y. Hu
Introduction Variable-angle locking systems offer increased surgical flexibility by permitting off-axis screw insertion, with some designs allowing angulation up to 15°. However, clinical challenges such as screw loosening and insufficient mechanical stability data persist. This study aims to evaluate the impact of different plate hole design parameters on the locking strength of plate-screw head interface under various screw insertion angles, providing insights to optimize VALS performance in fracture fixation. M…