Adjustable bone cutting guide plate for total knee arthroplasty

Abstract

The invention discloses an adjustable bone cutting guide plate for total knee arthroplasty. The adjustable bone cutting guide plate comprises a bone pasting module, a bone cutting module, a left support, a right support, a left supporting shaft, a right supporting shaft, two symmetrical synchronous knobs and two symmetrical positioning nuts, wherein the left support and the right support are symmetrical, and the left supporting shaft and the right supporting shaft are symmetrical. The adjustable bone cutting guide plate has the characteristics of ensuring that a molded surface matched with a femoral prosthesis is formed by secondary bone cutting, reducing bone cutting complications, promoting accurate placement of the femoral prosthesis, increasing operation smoothness, shortening operation time and ensuring the safety and the curative effect of total knee arthroplasty.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an adjustable osteotomy guide plate for total knee arthroplasty. Background technique [0002] After decades of development, artificial total knee replacement has become an effective treatment for various end-stage knee diseases such as knee osteoarthritis, rheumatoid arthritis, traumatic arthritis, and knee osteonecrosis. And known as one of the most successful operations in the last century, this operation can effectively relieve pain, restore joint function, and significantly improve the quality of life of patients. At present, the number of knee replacements worldwide is increasing rapidly year by year, and the number of primary total knee replacements in the United States is about 700,000 cases each year. Due to the large population base in my country, with the improvement of living conditions and the acceleration of the aging process, the number of total knee arthr...

AI Technical Summary

Problems solved by technology

At present, the osteotomy guides used in clinical practice are all fixed modules, which have the following disadvantages: 1. Once the osteotomy guide is close to the osteotomy surface of the distal femur for secondary osteotomy, the osteotomy direction of the front, back and oblique surfaces of the femur is fixed. , cannot adjust

Due to the anatomical differences of patients, the fixed direction of osteotomy will easily lead to insufficient or excessive osteotomy of the anterior femoral condyle, and imbalance between extension and flexion, which will affect the curative effect of total knee arthroplasty and the service life of the prosthesis; 2. For the currently used osteotomy guide plate, if the direction of osteotomy and the amount of osteotomy are found to be abnormal before the second osteotomy or after the second osteotomy, it is necessary to remove the osteotomy guide plate from the osteotomy surface of the distal femur and then adjust the position of the guide plate and fixation, and then perform a second osteotomy, which will affect the smoothness of the operation and prolong the operation time

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