Single-ankle type knee joint prosthesis

Abstract

The invention relates to a single-ankle type knee joint prosthesis which comprises components of an ankle base with a sinking hole and/or through hole, wherein the ankle base comprises a chamber outerpart, a boss type chamber inner part and a fin type chamber inner part, wherein the chamber outer part comprises a first bone surface copying surface, a first folding surface, a joint bone top surface and a joint bone side surface, the boss type chamber inner part is arranged on the joint bone top surface, and the fin type chamber inner part is arranged on the joint bone side surface; and an ankle cap which comprises a second bone surface copying surface and a second folding surface, wherein the second folding surface is in matched connection with the first folding surface and the ankle cap packages the bottom end of the ankle base. and the second bone surface copying surface can be independently used as a femur ankle joint surface and is in matched splicing with the first bone surface copying surface. The single-ankle type knee joint prosthesis can match the tibia of a patient, thereby preventing tibia cutting operation of a patient with femur ankle lesion and without tibia lesion inknee joint displacement surgery by a doctor, effectively reducing bone cutting operation difficulty and loss amount of high-quality sclerotin, reducing wound area caused by the surgery, and shortening an after-surgery recovering time length.

Description

technical field [0001] The invention belongs to the field of prosthesis design and manufacture, and in particular relates to a unicondylar knee joint prosthesis that can cooperate with a patient's tibia. Background technique [0002] As far as current medical care is concerned, replacing the diseased knee joint in a patient's body with a knee joint prosthesis is a common operation to solve knee joint tumors. Although this operation can solve the pain caused by the knee tumor to the patient and restore the ability to walk. However, since the existing knee joint prosthesis is composed of femoral component, tibial component and spacer, both femoral osteotomy and tibial osteotomy have to be performed on the knee joint with local disease or overall disease. That is to say, since there is no unicompartmental knee prosthesis that matches the patient's tibia in the prior art, when performing knee replacement surgery for patients with femoral condyle lesions but no tibial lesions, t...

AI Technical Summary

Problems solved by technology

[0003] In order to solve all or part of the above problems, the object of the present invention is to provide a unicompartmental knee joint prosthesis, which can cooperate with the patient's tibia, so as to prevent doctors from treating femoral condyle disease without tibia in knee joint replacement surgery. Patients with diseased tibial osteotomy can effectively reduce a series of adverse problems such as the difficulty of osteotomy operation, the loss of high-quality bone, the trauma area caused by surgery, and the postoperative recovery time.

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