Posterior cruciate ligament protection device

Abstract

The invention discloses a posterior cruciate ligament protection device. The posterior cruciate ligament protection device comprises an elevator, an osteotome and a screw. The elevator comprises a handle, an auxiliary prizing plate and a prizing head. The handle, the auxiliary prizing plate and the prizing head are integrally formed, the handle is flat, one end of the handle is connected with theauxiliary prizing plate, the auxiliary prizing plate is of a flat arc-shaped structure and is matched with a trochlear groove, the prizing head is connected to the end, away from the handle, of the auxiliary prizing plate, a hole groove and a check table are further arranged at the end, close to the auxiliary prizing plate, of the handle, and the hole groove penetrates through the handle and the check table. An open groove is formed in a handle of the osteotome. The screw penetrates into the open groove of the osteotome and penetrates out of the hole groove in the handle of the elevator, and then the osteotome is screwed with the elevator. The posterior cruciate ligament protection device is simple in structure, convenient to use and low in manufacturing cost, the operation time is greatlyshortened, and the operation survival rate is increased.

Description

technical field [0001] The invention relates to the technical field, in particular to a posterior cruciate ligament protection device. Background technique [0002] With the increase of social aging, the number of middle-aged and elderly people suffering from knee degenerative diseases is increasing year by year. The number of patients suffering from osteoarthritis in my country is as many as 65 million. The prevalence rate of people over 30 years old is 10% to 17%, that of people over 65 years old is 60%, and that of people over 75 years old is 80%. Among them, the disability rate is as high as 53%. %. 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 joint pain, rebuild joint function and range of motion, and has been widely used clinically. However, the posterior cruciate ligament Intact preservation plays a vital role in the stability of the knee join...

AI Technical Summary

Problems solved by technology

[0004] In the existing posterior cruciate ligament-preserving artificial total knee replacement surgery, since there is no special surgical instrument or device to protect the posterior cruciate ligament, the position of the bone block at the bottom of the posterior cruciate ligament can only be determined by visual inspection or using long steel nails. Position and size, not only time-consuming and labor-intensive, but also poor protection of the posterior cruciate ligament

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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