Tantalum provides a high friction coefficient that helps reduce implant displacement, as well as a low elastic modulus that improves load sharing, with an average porosity of up to 80% and a consistent open pore structure, the material is also designed to have a similar structure and mechanical properties to bone, providing an excellent environment for bone inward growth and vascularization. At present, no other material can provide similar structure, function and physiological function.
Tantalum metal cage features:
1. The open stereoscopic linkage structure is similar to the cavernous porous tantalum metal, showing an open and continuous pore structure, which is a continuous 12-hedral pore structure with average size. The whole structure is very similar to the human spongy bone.
2. Pore size and porosity favorable for bone growth The average pore size of porous tantalum metal is 550μm, which is very similar to the pore size of human sponge bone 500-700 μm. A high porosity of 80 to 85 percent provides an interface conducive to cell and blood flow, and of course shapes a space suitable for bone growth.
3. The closer the hardness and elasticity coefficient are to the human bone, the closer the hardness and elasticity of the human bone implant is to the human bone, the force of the spine can be normally transmitted to the bone, providing the function of Load Sharing, creating an optimal environment for bone growth, so that the bone can grow better and more efficiently.
4. The strength/toughness of tantalum metal is better than that of human bone. The strength/toughness of porous tantalum metal is better than that of human sponge bone. Better strength/toughness to provide a supportive skeleton in the initial phase of fusion surgery and to assist in long-term bone bridging.
5. Tantalum friction is better than other metals In order to provide relative stability in the initial stage of fusion surgery, the higher the friction force, the higher the stability. Compared with other materials, the friction force of porous tantalum metal is significantly higher than other materials, porous tantalum metal surface has many protrusions and rough operation surface, which can improve the success rate of fusion surgery.
