Knee-joint prosthesis for anatomy

Abstract

The invention relates to an anatomical knee joint prosthesis, which comprises a tibial plateau, a tibial pad, a femoral component and a patella. The condyle bearing surface, an upright column is arranged between the medial condyle bearing surface and the lateral condyle bearing surface, the femoral component includes the medial condyle and the lateral condyle, an intercondylar groove is arranged between the medial and lateral condyles, and a cam is arranged at the rear of the intercondylar groove, The column is inserted in the intercondylar groove, the rear surface of the column includes a first arc surface and a second arc surface on the outside, a third arc surface and a fourth arc surface are arranged on the cam correspondingly, and the patella is arranged behind the cam part and slide relative to the cam. The present invention utilizes the cooperation between the first arc surface and the third arc surface and the cooperation between the second arc surface and the fourth arc surface to accurately simulate the mechanical movement of the knee joint, is safe and reliable, improves the use level of the knee joint prosthesis, and provides patients with and anatomical research to provide better services.

Description

technical field [0001] The invention relates to the medical field, in particular to an anatomical knee joint prosthesis. Background technique [0002] The concept of knee prosthesis design is generally based on the same principle, that is, to provide a biomechanical movement pattern similar to a normal knee joint with implanted knee joint components, and to achieve static and dynamic motion with the help of the implant itself and the balance of knee ligaments and soft tissues. stability. Knee prostheses are often used in knee replacement surgery, anatomical studies, and more. [0003] Existing knee prosthesis structures such as figure 1 As shown, the platform pad prosthesis 100 is included, and the platform pad prosthesis 100 is fixedly installed on the platform pad prosthesis 400, and an intermediate connecting body—a condyle prosthesis 200 is movably arranged on the platform pad prosthesis 100, and the condyle prosthesis 200 It is compatible with the contact surface of ...

AI Technical Summary

Problems solved by technology

However, the 1:1 load-bearing surface between the condyle prosthesis 200 and the platform pad prosthesis 100 of this knee joint prosthesis cannot completely replicate the knee kinematics and function of the natural anatomy, which is critical for the correct analysis of the biomechanics and motion of the normal knee joint. Mode exists

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