Bionic stable unicompartmental knee joint tibial plateau pad and knee joint prosthesis applying same

Abstract

The invention discloses a bionic stable type unicompartmental knee joint tibial plateau pad and a knee joint prosthesis applying the same. The bionic stable type unicompartmental knee joint prosthesis comprises a femoral condyle prosthesis, a tibial plateau pad, a tibial plateau support and a femoral pulley prosthesis. According to the femoral condyle prosthesis, the anatomical form design is adopted for the anterior condyle and the posterior condyle extension design, and the hyperextension and high-flexion movement of the knee joint can be met; meanwhile, the front edge of the femoral condyle prosthesis is designed to be concave inwards, so that the femoral pulley prosthesis is effectively avoided, and replacement of the inter-patellofemoral ventricular lesion prosthesis is facilitated; the femoral condyle far-end thinning design of the prosthesis effectively reduces the osteotomy amount of the femoral side; the multi-model size of the prosthesis covers the skeleton anatomical forms of all Asians as much as possible; and the unicompartmental knee joint prosthesis aims at reproducing natural knee joint movement, replacement of diseases of unicompartmental osteoarthritis, double-compartmental osteoarthritis and three-compartmental osteoarthritis can be met, the preoperative state and proprioceptive feeling can be restored to the maximum extent, stimulation to human body soft tissue is little after replacement, and requirements of patients can be better met.

Description

technical field [0001] The present application relates to the field of artificial joints, in particular to a bionic stable unicondylar knee tibial plateau pad and a knee joint prosthesis using the same. Background technique [0002] Patients with knee joint injury or disease need artificial knee prosthesis to replace the damaged or diseased unilateral knee joint or femoral trochlear prosthesis replacement. [0003] The artificial knee joint prosthesis includes a femoral condyle prosthesis connected to the distal end of the femur, a tibial plateau support connected to the proximal end of the tibia, and a tibial plateau pad arranged between the two. [0004] There are currently several types of platform spacers for artificial knee prosthesis: [0005] 1. Movable unicondylar tibial plateau pad (moveable platform unicondylar), the tibial plateau pad and the tibial plateau rest are in plane-to-plane contact, relying on the ligament tension of the knee joint and the doctor's prec...

AI Technical Summary

Problems solved by technology

[0008] However, the limited fixed platform unicondyle currently developed, because the upper surface of the tibial plateau pad is close to the plane, the contact area between the femoral condyle prosthesis and the tibial plateau pad is small, so the stress on the tibial plateau pad is easy to concentrate, and the wear rate of the prosthesis high, short life

[0009] It can be seen that the current tibial plateau pad still has the problem that it cannot meet the actual clinical needs

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