Distal tibia end inner side hook plate

Abstract

A distal tibia end inner side hook plate comprises a plate body and a hook body. The plate body comprises a proximal end portion and a distal end portion wider than the proximal end portion. The plate body is uniformly provided with adjustable screw holes in the axial direction. The hook body is connected to the distal end portion of the plate body and provided with two sharp hooks. The inner side surface of the plate body is recessed inwards. The distal end portion of the plate body is bent outwards. The hook body is bent inwards. The inner side surface of the plate body and the inner surface of the hook body are adapted to distal tibia end inner side bone in shape. The two sharp hooks of the hook body can be pressurized through hollow screws to enter the tip of the medial malleolus bone to form triangular multi-planar three-dimensional fixing at the distal fracture end, strengthen the anti-torsion capability, prevent the distal medial malleolus fracture end from shifting back and forth and reduce the risk of secondary reduction loss. The proximal end portion of the plate body is fixed through screws to serve as an anti-slipping plate for effectively preventing the displacement of the distal end bone. The hook plate used for fixing can also play a role of a supporting plate to prevent secondary collapse of the articular surface for a patient with medial malleolus superior angle articular cartilage lower bone compression.

Description

technical field [0001] The present invention relates to a medical device, especially a device for treating fractures of the medial malleolus. Background technique [0002] Ankle joint fractures are common fractures of the lower extremities. According to the currently commonly used Lauge-Hansen classification, the type of ankle joint fracture can be diagnosed while the degree of ankle joint injury can be understood, which can provide guidance for reduction and internal fixation. Among them, the injury mechanism of the supination-adduction ankle joint injury is that when the foot is in the supination position, it is subjected to adduction stress and the lateral malleolus is pulled. First, a low transverse or short oblique fracture occurs, and a few are accompanied by a tear of the lateral collateral ligament ( Grade I injury); then when the foot is adducted, the talus is subjected to a strong adduction and external force in the ankle point, and rolls in the ankle point with a ...

AI Technical Summary

Problems solved by technology

In such patients, the vertical fracture line of the medial malleolus will generate high shear stress when the ankle joint moves. After applying the above-mentioned traditional methods of fixation, the fixation strength will be reduced because the internal fixation is not perpendicular to the fracture line, which will have a certain impact on the early functional exercise of the ankle joint. impact, which can easily lead to failure of internal fixation or displacement of the fracture end

Images