Biological-type knee joint tibial plateau

Abstract

The invention discloses a biological-type knee joint tibial plateau. The biological-type knee joint tibial plateau comprises a reniform plateau bearing part, a swallow-tail form protruding block is arranged on the upper surface of the inward bending part of the reniform platform bearing part, an arc protruding block is arranged on the upper surface of the outward bending part of the reniform platform bearing part, and upper and lower fixed holes are formed in the outer side surface of the arc protruding block from top to bottom; a hole is formed in the middle of the reniform plateau bearing part, the lower surface of the reniform plateau bearing part is connected with a handle, and the hole and the inside of a reducer pipe with the closed bottom are in through arrangement; an annular platewith an inner thread is arranged on the inner wall of the upper middle portion of the reducer pipe, two symmetrical vertical holes are formed in the side wall, and two shaft fixing blocks with holesare arranged on the inner wall; a shaft is connected with a puncture claw, the two ends of the shaft are movably connected with the shaft fixing blocks with holes respectively, and a limit rib plate is arranged on the portion, located on the outer side of the puncture claw, of the inner wall of the lower portion of the reducer pipe with the closed bottom; a top rod is composed of a rod cap and a rod body with an outer thread and is in threaded connection with the annular plate with the inner thread. The experiment result shows that the tibial plateau is high in capacity of resistance to pulling and good in stability.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, and in particular relates to a biological knee tibial platform. Background technique [0002] Knee replacement surgery can effectively solve the patient's knee symptoms, relieve the patient's pain, and restore the patient's knee function to a certain extent. The structure of knee prosthesis includes: femoral condyle, tibial plateau, tibial plateau pad, patella and accessories. With the rapid development of medical device technology and the continuous improvement of people's requirements for the safety and effectiveness of knee joint prosthesis, knee joint prosthesis technology has become more mature and perfect, and different types of knee joint prosthesis have emerged one after another. [0003] At present, according to different fixation methods, knee prostheses can be divided into two categories: bone cement fixation and biological fixation (non-bone cement). Among them, bone cemen...

AI Technical Summary

Problems solved by technology

However, the existing bio-based knee prosthesis is prone to loosening under walking load, and complications such as subsidence or tilting of the tibial plateau often occur, resulting in insufficient initial stability of the tibial plateau. Stiff fixation or lateral shear forces from eccentric loading cause fretting or displacement at the prosthesis-bone interface

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