A fixation plate for avulsion fracture of posterior cruciate ligament tibial insertion

Abstract

The invention discloses a fixing steel plate for the posterior cruciate ligament tibial avulsion fracture. The fixing steel plate is provided with a U-shaped pressing plate, the periphery of the front portion of the posterior cruciate ligament tibial insertion is covered with the bending part of the U-shaped pressing plate, and the two sides of the U-shaped pressing plate extend along the edges of the two sides of the posterior cruciate ligament tibial insertion respectively to the rear poration of the posterior cruciate ligament tibial insertion; the lower surface of the U-shaped pressing plate is a curved surface matched with the surface of the bone covered with the U-shaped pressing plate; the two sides of the U-shaped pressing plate are each provided with a lug extending outwards, and the lower surface of each lug is a curved surface matched with the surface of the bone covered with the lug; a screw hole is formed in the middle of each lug, and the axis of each screw hole points to the cortical bone in front of the upper section of the tibia; one line tying hole is formed in the position, close to the front edge of each lug, on the corresponding side of the U-shaped pressing plate, and one line tying hole is formed in the position, close to the rear edge of each lug, on the corresponding side of the U-shaped pressing plate.

Description

technical field [0001] The invention relates to a surgical instrument, in particular to an internal fixation steel plate for bone setting. Background technique [0002] Avulsion fractures of the tibial insertion of the posterior cruciate ligament of the knee joint are a common cause of injury to the inferior insertion of the posterior cruciate ligament; such fractures are likely to cause soft tissues such as the posterior horn of the meniscus or the posterior joint capsule of the knee joint to embed into the fracture line, thereby affecting fracture reduction and recovery. Healing, but unreduced malunion will cause the posterior cruciate ligament to be in a loose state, and the knee joint will experience backward instability and rotational instability, which will affect the function of the knee joint and lead to a series of sequelae. [0003] The modified Meyers-McKeever classification of posterior cruciate ligament tibial insertion avulsion fractures is commonly used: type ...

AI Technical Summary

Problems solved by technology

However, the above-mentioned method focuses on the posterior cruciate ligament, and the contact area between the silk thread or steel wire and the ligament is small and the pressure is large, which will undoubtedly cause damage to the posterior cruciate ligament.

In addition, the above methods belong to elastic fixation rather than rigid fixation. The strength of the silk thread and the wiper effect of the fixation on the bone canal will seriously affect the fixation effect of the fracture.

In addition, the methods described above clearly do not securely fix fragmented avulsion fractures

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