An orthopaedic knee joint posterior cruciate ligament anatomical reconstruction system

Abstract

The invention discloses a knee-joint posterior cruciate ligament anatomical-reconstruction system used in the department of orthopaedics. The knee-joint posterior cruciate ligament anatomical-reconstruction system comprises an upper fixing part and a lower fixing part, wherein each of the upper fixing part and the lower fixing part comprises a positioning portion, an upper fixing portion and a lower fixing portion, and the opposite faces of the lower fixing portion of the upper fixing part and the lower fixing portion of the lower fixing part are provided with correspondingly arranged hinged supports. The knee-joint posterior cruciate ligament anatomical-reconstruction system positions the upper fixing part and the lower fixing part through positioning holes formed in the middles of the positioning portions of the upper fixing part and the lower fixing part and respectively fixes the upper fixing part and the lower fixing part on the thighbone and the tibia through upper fixing holes and lower fixing holes formed in the upper fixing portion and the lower fixing portion, adjusts the space between the upper fixing part and the lower fixing part and adjusts and fixes the included angle formed by the upper fixing part and the lower fixing part through matching between an adjusting stud and an adjusting nut, and then re-fixes the upper fixing part and the lower fixing part through guiding wires connected to a first lead hook and a second lead hook.

Description

technical field [0001] The invention relates to the technical field of orthopedics, in particular to an orthopedic knee posterior cruciate ligament anatomical reconstruction system. Background technique [0002] Posterior cruciate ligament, PCL for short, refers to the dense collagen fiber tissue issued behind the articular cartilage on the lateral surface of the medial femoral condyle of the human knee joint, from the anterior, superior, and medial obliques of the intercondylar fossa to the posterior, inferior, and lateral of the tibial plateau , the ligament structure formed by inserting at the posterior edge of the intercondylar ridge of the tibial plateau, there are nourishing blood vessels and nerve distribution at both ends of the femoral and tibial insertion points, the main function is to prevent the tibia from sinking, and the posterior medial and posterior lateral of the knee joint The complex maintains the backward and rotational stability of the knee joint. Howev...

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Problems solved by technology

[0002] Posterior cruciate ligament, PCL for short, refers to the dense collagen fiber tissue issued behind the articular cartilage on the lateral surface of the medial femoral condyle of the human knee joint, from the anterior, superior, and medial obliques of the intercondylar fossa to the posterior, inferior, and lateral of the tibial plateau , the ligament structure formed by inserting at the posterior edge of the intercondylar ridge of the tibial plateau, there are nourishing blood vessels and nerve distribution at both ends of the femoral and tibial insertion points, the main function is to prevent the tibia from sinking, and the posterior medial and posterior lateral of the knee joint The complex maintains the backward and rotational stability of the knee joint. However, once the PCL is damaged, it is very troublesome to repair. Clinical statistics at home and abroad show that the amount of reconstruction surgery for PCL rupture is far less than that of the anterior cruciate ligament of the knee joint. Relevant surgical experience is significantly less; in addition, the PCL tibial insertion area is located in the posterior intercondylar fossa, close to the dangerous popliteal fossa blood vessels and nerve area. Therefore, only a small number of large hospitals in China can perform this operation safely and effectively. For most grassroots hospitals engaged in trauma treatment, knee dislocations involving PCL rupture often require clinical surgical treatment, but the aforementioned two reasons hinder the promotion of PCL reconstruction surgery in grassroots hospitals, so the search for " Safe, effective and easy" PCL surgery method, and design corresponding surgical tools accordingly, has become the most important link to promote PCL reconstruction, reduce surgical risk and reduce learning difficulty

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