Posterior cruciate ligament protection device for total knee replacement

Abstract

The invention relates to a posterior cruciate ligament protection device for total knee replacement. The posterior cruciate ligament protection device is characterized by comprising a handle, wherein one end of the handle is fastened and connected with an auxiliary plate; the inner surface of the auxiliary plate is of an arc-shaped structure; one end, far away from the handle, of the auxiliary plate is fastened and connected with a fixed protection plate; the inner surface of the fixed protection plate is provided with a groove structure; and the end part, far away from the auxiliary plate, of the fixed protection plate is provided with a cutting edge. One end of the handle is fastened and connected with the auxiliary plate for covering a thighbone trochlear groove, and the fixed protection plate inserted into the tibial plateau sclerotin is fastened and connected into a position, far away from the handle, of the auxiliary plate, so that in the use process, the tibial plateau can be forwards pushed out relative to the thighbone by using the lever principle; and the convenience is brought to osteotomy. The inner surface of the fixed protection plate is provided with the groove structure, so that the posterior cruciate ligament and the posterior cruciate ligament bottom dead center can be covered and protected, and the posterior cruciate ligament tibial lateral bottom dead center avulsion fracture in and after the operation can be prevented.

Description

technical field [0001] The invention relates to a posterior cruciate ligament protection device used for total knee arthroplasty, belonging to the field of medical devices. Background technique [0002] The knee joint is one of the most important joints in the human body. With the rising incidence of obesity, social aging and sports trauma, the number of middle-aged and elderly people suffering from knee degenerative diseases is increasing year by year. Total knee arthroplasty is the main method for the treatment of severe degenerative knee osteoarthritis in the middle and advanced stages. It can effectively relieve knee pain and restore joint function and range of motion. It has been widely used in clinical practice. In 2010, the annual total knee replacement surgery in the United States reached 600,000 cases, and it is estimated that by 2030, there will be 3.48 million total knee replacement operations in the United States every year. Compared with western countries, the ...

AI Technical Summary

Problems solved by technology

[0004] In the existing total knee replacement surgery, since there is no special surgical instrument or device to protect the posterior cruciate ligament, the position and size of the bone block at the bottom stop of the posterior cruciate ligament can only be determined by visual inspection or using long steel nails, which is not only time-consuming Strenuous and poorly protected PCL

When the tibial plateau osteotomy is performed with an electric pendulum saw blade, partial avulsion or complete avulsion of the posterior cruciate ligament at the lower insertion point of the tibia is very likely to occur, causing relaxation of the posterior cruciate ligament, thereby affecting postoperative efficacy and knee prosthesis service life, resulting in surgical failure

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