Artificial ligament bionic fixed distal femur tumor type semi-knee joint prosthesis

Abstract

The invention discloses an artificial ligament bionic fixed type distal femur tumor type semi-knee joint prosthesis. The artificial ligament bionic fixed type distal femur tumor type semi-knee joint prosthesis comprises a distal femur prosthesis and an artificial ligament. The artificial ligament is divided into an anterior cruciate ligament, a posterior cruciate ligament, a medial collateral ligament and an lateral collateral ligament, and the artificial ligament is fixed on the distal femur prosthesis. Two through holes are formed in the distal femur prosthesis in a penetrating mode, the anterior cruciate ligament and the posterior cruciate ligament penetrate through the through holes and are fixed to the distal femur prosthesis, and collateral ligament fixing structures are arranged on the inner side and the outer side of the distal femur prosthesis respectively and used for fixing one end of the medial / lateral collateral ligaments to the distal femur prosthesis. The collateral ligament fixing structures can rotate relative to the distal femur prosthesis. By reasonably fixing the ligament, the distal femur prosthesis can rotate back and forth relative to the tibial plateau, and the knee joint is allowed to bend and stretch; and when the knee joint bends and stretches, the medial / lateral collateral ligaments are kept still, so that the conditions of excessive stretching and prosthesis winding after stretching are avoided.

Description

technical field [0001] The invention relates to the field of artificial prosthesis replacement, in particular to an artificial ligament bionic fixed distal femur tumor type half knee joint prosthesis. Background technique [0002] The distal femur is the most common site of osteosarcoma and other malignant bone tumors. Surgical resection of such tumors will lead to distal femur defects, accumulating knee joints and causing knee joint dysfunction. Currently, hinged tumor knee replacement is the most commonly used surgical reconstruction. Osteosarcoma most often occurs in young people under the age of 20, especially children. The epiphysis of this group has not yet healed or has not fully healed, and the bones are still in the growth and development stage. The hinged tumor-type knee joint prosthesis needs to be resected at the same time as the distal femur to place the prosthetic components, which leads to the involvement of the proximal tibial epiphysis, which affects the gr...

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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