The condyles of zirconium niobium alloy zoned bone trabeculae single compartment and the preparation method. Using zirconium niobium alloy powder as raw material, the intermediate product of the femoral condyles of single compartment of bone trabeculae containing zirconium niobium alloy was obtained by 3D printing. Then, through hot isostatic pressing, deep cooling and surface oxidation, the femoral condyles of single compartment of bone trabeculae containing zirconium niobium alloy were obtained. The femoral condyle includes the articular surface of the femoral condyle (1) and the osseous condyle (2), and the osseous condyle (2) is divided into bone trabeculae (6). The femoral condyle can reduce the fretting between the prosthesis and the bone interface, reduce the stress shielding effect of the prosthesis on the bone tissue, make the femoral condyle bone tissue stress uniformity, and improve the initial and long-term stability of the single compartment femoral condyle.
With excellent corrosion resistance, mechanical properties and good biocompatibility, zirconium-niobium alloy has been gradually applied in the field of medical devices. Zirconium niobium alloy can react with N, C, O and other elements on the surface to form a hard oxide layer, has excellent wear resistance and low wear rate, can reduce the wear of soft materials, that is, has excellent wear resistance of joint surface interface; And the oxide layer can reduce the release of metal ions and has excellent biocompatibility, that is, it has excellent biocompatibility at the bone integration interface. The articular surface with low wear rate is compatible with the bone integration interface (bone trabecula) with excellent bone entry performance, so that the prosthesis can achieve the advantages of both interfaces. However, the existing technology can not achieve this optimization design at the same time.
3D printing technology, as an additive manufacturing technology, breaks through the concept of product design oriented to manufacturing process and realizes the concept of product design oriented to performance, which not only solves the problem that complex parts are difficult to form as a whole, but also reduces the waste of raw materials and energy caused by machining and manufacturing. However, the solid part of 3D printing products is prone to problems such as uneven microstructure, internal defects and poor mechanical properties. The powder in the bone trabecular structure was not well fused, and the mechanical properties were poor.
