Tibial plateau assembly and knee joint prosthesis using tibial plateau assembly

Abstract

The invention belongs to the field of medical apparatus, and discloses a tibial plateau assembly and a knee joint prosthesis using the tibial plateau assembly. The tibial plateau assembly includes a tibial plateau part and an extension part which is detachably connected with the tibial plateau part, wherein a connection column is formed on a first plane, which is used for being connected with a resected surface of a tibia, of the tibial plateau part and is perpendicular to the first plane; and the extension part includes a sleeving connection cylinder and an extension rod, wherein the sleevingconnection cylinder is used for being connected with the outer surface of the connection column in a sleeving mode, the extension rod is coaxially connected with the sleeving connection cylinder, andthe sleeving connection cylinder can rotate relative to the connection column and be fixed, so that rotation positions of the tibial plateau part relative to the extension part are adjusted and fixed. By adopting the tibial plateau assembly, loosening risks of a tibial plateau support can be effectively reduced, and meanwhile the universality of the tibial plateau support is enhanced.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a tibial plateau component and a knee joint prosthesis using the same. Background technique [0002] A knee prosthesis is a surgical implant used to replace the knee joint. It is used for surface knee replacement surgery of artificial knee joint, which treats the damaged knee joint and replaces it with a knee joint prosthesis. The existing knee joint prosthesis structure mainly includes: a femoral condyle for connecting with the femur of the human body, a tibial plateau support for connecting with the tibia of the human body, and a tibial plateau pad between the femoral condyle and the tibial plateau support. Specifically, one side of the tibial platform support is used to cover the osteotomy plane of the tibia, and the other side opposite to this side is used to connect the fixed platform pad. [0003] Currently, knee prostheses are widely used in knee replacement surgery. Howe...

AI Technical Summary

Problems solved by technology

However, during the movement of the knee joint prosthesis, the normal valgus and internal rotation of the femoral condyle tends to cause frequent collisions between the femoral condyle prosthesis and the tibial plateau pad, which leads to the friction between the tibial plateau pad and the human tibia. The connection is prone to loosening, which increases the risk of intra-articular hemorrhage and even requires revision surgery for the patient; in addition, the tibial plateau support in most existing knee joint prostheses often cannot be additionally connected with extension rods during use, which makes It will make this type of knee prosthesis unable to be used properly in some specific operations

In addition, the tibial wing of the tibial plateau in the existing knee joint prosthesis is usually fixed to the platform of the tibial plateau. When it is installed in the human body, the tibial plateau cannot be better adapted to different patients. The characteristics of the tibial medullary cavity and the shape of the tibial osteotomy make the use of such knee prostheses limited

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