Ulna coracoid process locking plate

Abstract

The invention discloses an ulna coracoid process locking plate. The ulna coracoid process locking plate comprises a transverse locking part and a longitudinal locking part which are arranged in a crossed mode, wherein the binding face of the transverse locking part is of an arc-shaped curved surface structure matched with the transverse anatomical structure of the coracoid process, the binding face of the longitudinal locking part is of an arc-shaped curved surface structure matched with the longitudinal anatomical structure of the coracoid process, the transverse locking part and the longitudinal locking part are each provided with a plurality of locking holes, and the end position of the longitudinal locking part is connected with a coronal protruding tip hook claw capable of acting on the coronal protruding tip part. A sharp fracture block can be well and effectively fixed through the coronal protruding tip hook claw, the acting surface of the coronal protruding tip hook claw is a coronal surface, and the fixed surface of each locking nail locked on the transverse locking part and the longitudinal locking part is a sagittal surface, so that The locking nails of the coronal protruding tip hook claw are matched with one another to form a three-dimensional multi-directional fixed structure, the fracture fixing effect can be greatly improved, and fracture recovery is facilitated.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to an ulnar coronoid locking plate. Background technique [0002] The coronoid process of the ulna is the key bony structure for elbow stability. Coronoid fractures are often caused by axial stress on the elbow and result in elbow dislocation. Fifty-eight percent of the anteromedial coronoid structures are not supported by the bony structures of the ulnar metaphysis or diaphysis, and are therefore susceptible to fracture. Both low-energy (falls, forearm twists) and high-energy injuries (high falls, car accidents) can cause coronoid fractures, which may be accompanied by radial head fractures and elbow collateral ligament injuries. Coronoid fractures usually require CT to assist diagnosis, and O'Driscoll, an expert in elbow joint trauma in the United States, divided them into three types based on the appearance of coronoid fractures on CT. Type I is the fracture of the ...

AI Technical Summary

Problems solved by technology

When the coronoid fracture fragments are extremely comminuted and cannot be fixed with screws, anchors are usually used for fixation. However, the fixation strength of anchors is low and the ability to resist pull-out is poor. Especially when the quality of the joint capsule is poor, it is prone to failure and the fixation effect is not good. really

Cannulated screws are used to fix a large coronoid fracture with a single fragment, but if this method is used, it is best to place two screws to prevent the rotation of the fragment. Two screws are likely to cause cracking of the fracture block and loss of fixation strength

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