Knee prosthesis pads, tibial base elements, and knee prostheses

Abstract

The invention discloses a knee joint prosthesis, a knee joint prosthesis pad and a shinbone base element. The knee joint shinbone base element is combined with a shinbone, and comprises a base, wherein a boss is arranged on the base; and a guide channel through which an anterior cruciate ligament passes is formed on the boss and the base. The knee joint prosthesis pad is provided with a pad opening or a pad through hole for accommodating the boss of the shinbone base element. The knee joint prosthesis comprises the shinbone base element, the knee joint prosthesis pad and a shinbone element combined with the shinbone. The attaching position of the anterior cruciate ligament relative to the shinbone base element can be kept consistent with the attaching position of a human body anterior cruciate ligament in anatomy on the shinbone, so that the knee joint prosthesis can be used for rebuilding an anterior cruciate ligament, and a patient recovers body feel and moves well after replacement of the knee joint prosthesis.

Description

technical field [0001] The invention relates to a knee joint prosthesis, in particular to a knee joint prosthesis that preserves the posterior cruciate ligament while reconstructing the anterior cruciate ligament, as well as the knee joint prosthesis liner and the tibial base component. 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. These knee components are designed to restore natural human knee motion, as well as to adjust and control the forces generated during knee flexion and extension. But all current knee prosthesis designs fall short of this standard. [0003] A traditional knee joint prosthesis mainly includes a femoral component for combining w...

AI Technical Summary

Problems solved by technology

This reduces the fixation area between the tibial base element and the tibia, which may lead to early loosening and subsidence of the element, shortening the service life of the knee prosthesis, and because the anterior cruciate ligament is always attached to the tibia during surgery, the surgical Exposure is extremely difficult, and it is easy to cause errors such as knee prosthesis rotation and poor alignment

[0006] Therefore, the patient cannot recover the proprioception after replacing the existing reconstructed ACL-type knee prosthesis, and even affects the function; because the length and angle of the ACL will change during the movement of the knee joint, it will cause the ACL to be in the wrong position. Wear within the tibial base element or liner, which in severe cases can rupture the anterior cruciate ligament, shortens the life of the knee prosthesis and causes pain for the replacement

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