This cervical fusion device provides an excellent balance between porosity and strength. TM-S is the only cervical spinal implant made with Trabecular Metal™ material. It offers a high coefficient of friction to help prevent device migration and expulsion, as well as a low modulus of elasticity that may improve load-sharing, which potentially minimises stress-shielding. With its average porosity of up to 80% and a consistent open pore structure, the material is also designed to resemble the structure and mechanical properties of cancellous bone, which provides a suitable environment for bony in-growth and vascularisation.