Biomechanical comparison of multiple zero-profile systems in anterior cervical discectomy and fusion: a finite element analysis. - Lian, Xiong-han; Sun, Wen-jia; Xue, Huo-huo; Chen, Yu-fan; Zeng, Zhi-feng; Xue, Jing-lai (Journal of Orthopaedic Surgery & Research, 2025)