Thighbone osteotomy instrument suite

Abstract

The invention relates to the technical field of a medical treatment device, and particularly relates to a thighbone osteotomy instrument suite in a minimally invasive knee prosthesis operation. The suite comprises a thighbone remote end osteotomy device and a thighbone preartis osteotomy device, wherein the thighbone remote end osteotomy device comprises a thighbone remote positioning module, an adjusting rod and a thighbone remote end osteotomy module; the thighbone preartis osteotomy device comprises a thighbone measurer, a thighbone preartis locator and a thighbone preartis osteotomy module. By using the thighbone remote end osteotomy device and the thighbone preartis osteotomy device, the thighbone remote end and the thighbone preartis can be exactly positioned and performed with osteotomy, thereby avoiding the repeat operation or operation failure caused by location and osteotomy bias, and reducing the operation risk.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a femoral osteotomy instrument set used in minimally invasive knee joint replacement surgery. Background technique [0002] As my country enters an aging society in an all-round way, there are more and more elderly patients with osteoarthritis over the age of 65. Total knee replacement has become an effective method for the treatment of advanced knee osteoarthritis, which can relieve pain, improve function, and improve quality of life. [0003] In knee replacement surgery, in order to find a suitable installation plane of the knee femoral prosthesis and ensure that the plane formed by the anterior femoral condyle and the anterior cortical bone of the femur coincides as much as possible, it is necessary to perform osteotomy on the distal femur and the anterior femoral condyle. The depth of the distal osteotomy should be appropriate. If the osteotomy is too shallow or t...

AI Technical Summary

Problems solved by technology

The osteotomy plane of the anterior femoral condyle coincides with the plane formed by the anterior cortical bone of the femur as much as possible. If it is too high, it will cause poor fit between the prosthesis and the osteotomy surface, which will affect the fixation strength of the prosthesis. If it is too low, the anterior cortex of the femur will appear. Depression, increasing the risk of periprosthetic fractures

[0004] At present, when performing femoral osteotomy, most of them rely on the doctor's clinical experience and use the femoral measuring instrument for positioning. There is also a lack of reference in the osteotomy process after positioning. The whole process requires doctors to have rich clinical experience, and It is very prone to errors, resulting in duplication of work and even failure of the operation

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