Anatomical knee joint prosthesis

Abstract

The invention relates to an anatomical knee joint prosthesis. The anatomical knee joint prosthesis comprises a femoral condyle, a tibial plateau pad and a tibial plateau support. An upright post protruding upwards is arranged on the tibial plateau pad. The femoral condyle comprises a pulley, a preartis, an intercondylar groove and a postartis. The thickness of the postartis at the external condyleis 6-8 mm, and the thickness of the postartis at the internal condyle is 8-10 mm. The connecting line between the maximum curvature point on the postartis at the external condyle and the maximum curvature point on the postartis at the internal condyle forms an included angle of 3 degrees with the horizontal plane. The connecting line between the end part of the postartis and the end of the intercondylar groove forms an included angle of 15 degrees with the horizontal plane. The top surface of the inner side of the plateau and the top surface of the outer side of the plateau are both in the shape of a curved surface with a concave inner part and a convex edge, and the inner side of the plateau further sinks towards the inner part of the tibial plateau pad relative to the outer side of theplateau. The tibial plateau pad and the tibial plateau support are fixedly connected in a clamping manner. The anatomical knee joint prosthesis has the effect of better fitting the human body.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anatomical knee joint prosthesis. Background technique [0002] Most knee joints are designed with symmetrical femoral condyles, tibial plateau pads and tibial plateau pads, and a combination of symmetrically designed femoral condyles and tibial plateau pads. [0003] The above-mentioned scheme has the following disadvantages: it does not conform to the anatomical characteristics of the human body, and it is easy to cause the soft tissues on both sides of the knee joint to be unbalanced in the state of flexion and extension, which will lead to joint instability, incorrect force line, poor postoperative function, and flexion and extension exercises that cannot meet the needs of physiological exercises The emergence of problems such as knee joint proprioception and prosthesis survival rate. Contents of the invention [0004] In view of the deficiencies in the prior ar...

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Problems solved by technology

[0003] The above-mentioned scheme has the following disadvantages: it does not conform to the anatomical characteristics of the human body, and it is easy to cause the soft tissues on both sides of the knee joint to be unbalanced in the state of flexion and extension, which will lead to joint instability, incorrect force line, poor postoperative function, and flexion and extension exercises that cannot meet the needs of physiological exercises The occurrence of problems such as knee joint proprioception and prosthesis survival rate

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