Biocompatible gradient bone trabecula artificial knee joint tibial plateau

Abstract

The invention discloses a biocompatible gradient bone trabecula artificial knee joint tibial plateau. The biocompatible gradient bone trabecula artificial knee joint tibial plateau comprises a kidney-shaped plateau support, a handle is arranged in the middle of the lower surface of the kidney-shaped plateau support, a bone trabecula layer is arranged on other parts, except for a connecting handle,of the lower surface of the kidney-shaped plateau support, and the bone trabecula layer is composed of a near-plateau bone-supporting trabecula layer and a far-plateau bone-supporting trabecula layer; and the pore diameter and porosity of the near-plateau bone-supporting trabecula layer are uniformly arranged, and the far-plateau bone-supporting trabecula layer is arranged in three partitions. The bone trabecula topological structure of the tibial plateau is in three-dimensional gradient distribution, the micro-strain of 64%-72% of a finite element model is between the lowest effective strainthreshold value and the hyper-physiological strain threshold value, the mechanical adaptability of prosthesis is improved, the bone ingrowth of the tibial plateau is improved, and the long-term stability is improved; and 3D printing integrated forming is adopted, the bonding strength of the bone trabecula and a solid body is high, and the bone trabecula is not prone to falling off.

Description

technical field [0001] The invention relates to an artificial knee joint tibial platform, in particular to a biocompatible gradient bone trabecular artificial knee joint tibial platform. Background technique [0002] Total knee arthroplasty is currently an effective clinical treatment for end-stage knee joint diseases. It uses artificially designed joint prostheses to replace damaged knee joint tissue, thereby relieving patients' pain, restoring their knee joint function, and improving their lives. quality. Corresponding to the anatomical structure of the human body, the composition of the knee joint prosthesis includes the femoral condyle, the tibial plateau and the plateau pad. With the rapid development of medical device technology and the continuous improvement of people's requirements for the safety and effectiveness of prosthetic products, the design and manufacturing technology of knee prosthesis will need to be continuously optimized and improved. [0003] At prese...

AI Technical Summary

Problems solved by technology

However, many years of clinical application have found that bone cement fixation can bring many safety and effectiveness problems: bone cement monomer polymerization releases heat, causing damage to surrounding tissues; if bone cement particles enter the blood or cause high pressure in the medullary cavity during filling, it will cause pulmonary embolism and fat embolism

However, from the axial view of the platform / bone interface, stress shielding will occur between the high elastic modulus of the metal material of the prosthesis and the low elastic modulus of the bone tissue

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