A Finite Element Analysis On Titanium Mesh Cages Bone Graft Fusion After Cervical Corpectomy

Object:To investigate the effects of the size of the mesh cages and an internal end ring systems on interface mechanical properties after anterior cervical corpectomy. Method: A finite element (C4～C7) model was developed and validated. Based on the intact model, four models were generated by simulating anterior cervical fusion after corpectomy according to four applied cage conditions. von Mises stress on the titanium mesh cages-endplate interface were comparatively analysed between the larger and the smaller diameter titamiun mesh cage, and between titanium mesh cages with and without internal end ring system after loading in three difference modes. Results: The stress on the larger diameter titanium mesh interface was smaller than that on the smaller one. The stress on the titanium mesh interface with augmentation of the end ring were smaller than that without augmentation of the end ring. Conclusions: Titanium mesh cages with a larger diameter or augmentation of the end ring produces lower incidence of subsidence.