An artificial ligament bionic fixed distal femoral tumor-type half knee joint prosthesis

Abstract

The invention discloses a bionic artificial ligament bionic fixed distal femur tumor-type semi-knee joint prosthesis, comprising a distal femoral prosthesis and an artificial ligament; the artificial ligament is divided into an anterior cruciate ligament, a posterior cruciate ligament, a medial collateral The collateral ligament, the artificial ligament is fixed on the distal femoral prosthesis; two through holes are opened in the distal femoral prosthesis for the anterior cruciate ligament and the posterior cruciate ligament to pass through and be fixed on the distal femoral prosthesis respectively. Physically, the inner and outer sides of the distal femoral prosthesis are respectively provided with collateral ligament fixing structures, which are used to fix one end of the medial / lateral collateral ligament on the distal femoral prosthesis; the collateral ligament fixing structures can be relatively Rotation of the distal femoral component. The present invention can make the distal femoral prosthesis rotate back and forth relative to the tibial plateau by rationally fixing the ligament, allowing the knee joint to perform flexion and extension movements; and when the knee joint is flexing and extending, the medial / lateral collateral ligament remains motionless, avoiding excessive stretching and The case of wrapping the prosthesis after stretching.

Description

technical field [0001] The invention relates to the field of artificial prosthesis replacement, in particular to an artificial ligament bionic fixed type semi-knee joint prosthesis of distal femoral tumor type. Background technique [0002] The distal femur is the most common site of malignant bone tumors such as osteosarcoma. Surgical resection of this type of tumor will lead to distal femoral defect, accumulating the knee joint and leading to knee joint dysfunction. Currently, hinged tumor knee replacement is the most commonly used surgical reconstruction method. Osteosarcoma most commonly occurs in young people under the age of 20, especially children, in which the epiphysis has not healed or not completely healed, and the bones are still in the stage of growth and development. The hinged tumor-type knee prosthesis needs to remove part of the proximal tibia to place the prosthetic components at the same time as the distal femur resection, which leads to the involvement o...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned defects in the prior art, the present invention provides a bionic artificial ligament bionic fixed distal femoral tumor-type half knee joint prosthesis, which preserves the tibial epiphysis as much as possible and ensures the growth and development of the tibia to the greatest extent. Reconstruction of the distal femur under certain circumstances ensures the stability of the knee joint while restoring the flexion and extension function as much as possible, and provides surgical opportunities for patients with secondary prosthesis replacement after epiphyseal healing

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