Assembly-adjustable four-in-one osteotomy plate

Abstract

The invention discloses an assembly-adjustable four-in-one osteotomy plate which comprises a four-in-one osteotomy plate main body and anterior and posterior condyle osteotomy blocks, the four-in-one osteotomy plate is designed to be of a split structure, a knee joint knee bending gap can be measured through a posterior condyle plane and a tibial plateau plane before osteotomy, the anterior condyle osteotomy amount of the femoral condyle of a knee joint can be measured through an anterior condyle plane, and the situation that the prosthesis is not stably fixed due to anterior condyle Notch appearance or insufficient osteotomy is avoided; two positioning columns are designed on the four-in-one osteotomy plate main body, and the up-down position of the four-in-one osteotomy plate main body is adjusted according to the measured knee bending gap of the knee joint and the osteotomy amount of the femoral condyle and the anterior condyle of the knee joint, so that the four-in-one osteotomy plate main body reaches the optimal osteotomy position and selects the optimal specification; and the four-in-one osteotomy plate main body is provided with a taking-out structure, so that a doctor can conveniently and quickly take down the four-side osteotomy plate main body in an operation, the operation time is shortened, infection is reduced, resection of bone mass caused by poor matching is avoided, and damage to a soft tissue balance system is reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an assembled and adjustable four-in-one osteotomy plate. Background technique [0002] Knee joint prosthesis is a surgical implant used to replace the knee joint. It is mainly used for knee joint surface replacement surgery. In knee joint prosthesis replacement surgery, the accuracy of osteotomy and operation time have a great influence on the effect and risk of surgery. Large impact, femoral osteotomy in knee joint surgery is mainly achieved with a four-in-one osteotomy plate. [0003] The common four-in-one osteotomy plate is an integrated structure, which mainly includes four osteotomy slots and fixation holes. Before osteotomy on all sides of the femur, it is usually necessary to evaluate whether the knee joint extension gap and knee flexion gap are equal and whether the selection of prosthesis specifications is reasonable , the instability of the extension gap and t...

AI Technical Summary

Problems solved by technology

[0003] The common four-in-one osteotomy plate is an integrated structure, which mainly includes four osteotomy slots and fixation holes. Before osteotomy on all sides of the femur, it is usually necessary to evaluate whether the knee joint extension gap and knee flexion gap are equal and whether the selection of prosthesis specifications is reasonable , the instability of the extension gap and the knee flexion gap may cause postoperative joint instability or early loosening of the prosthesis. It is very difficult to obtain the knee flexion gap before, and the knee flexion gap can only be measured after the osteotomy of the four sides of the femur. At this time, if the knee flexion gap is unbalanced, it is very difficult to adjust it, resulting in bone loss. Need Secondary osteotomy plus ligament release prolongs the operation time and the possibility of infection during the operation, and bone loss increases the risk of postoperative fractures

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