Analysis of the anti-subsidence mechanical properties of novel 3D-printed titanium cages compared to conventional titanium cages

作者：Huiming Yang, Yuhang Wang, Junxian Miao, Jiangtao Wang, Hao Li, Yang Zhang, Liang Yan, Biao Wang · 发表于：Journal of Orthopaedic Surgery and Research · 年份：2025 · DOI：10.1186/s13018-025-06237-6 · 被引用次数：3 · 研究领域：Cervical and Thoracic Myelopathy、Surgical Simulation and Training、Orthopaedic implants and arthroplasty

Titanium cage subsidence remains a common complication following anterior cervical corpectomy and fusion. 3D printing technology can optimize titanium cages, including high geometric matching and unique porous graded structures, providing a better option for improving titanium cage subsidence. This study aims to evaluate the mechanical properties of 3D-printed titanium cages and compare them with those of conventional titanium cages, providing preclinical data for future clinical trials. The samples were divided into a 3D-printed titanium cage group and a conventional titanium cage group, with 5 samples in each group. A static compression test was conducted using the American Society for Testing and Materials (ASTM) F2077-14 standard to evaluate the stiffness of the titanium cages. A static subsidence test was conducted using the ASTM F2267-04 standard to evaluate the stiffness (K p ) of the test blocks in different groups of Sawbone. The larger the K p value, the smaller the tendency of titanium cage subsidence. In the static compression test, the stiffness of the 3D-printed titanium cage and the conventional titanium cage were (6562.60 ± 390.72) N/mm and (10252.40 ± 704.07) N/mm, respectively, with a statistically significant difference ( P < 0.05). In the static subsidence test, the stiffness of the 3D-printed titanium cage system and the conventional titanium cage system were (258.60 ± 7.99) N/mm and (221.00 ± 20.36) N/mm, respectively, with a statistically significant di...