Novel middle-inferior humerus anterior-lateral anatomy locking bone plate

Abstract

A new type of anterolateral anatomical locking bone plate in the middle and lower humerus, divided into proximal part, transitional part and distal part. The proximal part is located on the anterolateral side of the middle shaft of the humerus, and includes 3, 4, 5, 6, 7, and 8 pairs of screw holes, each pair of screw holes is composed of a locking hole combined with a sliding pressure hole; the transition part is located at the middle and lower humerus 1 The anterolateral part of the / 3 junction contains 2 locking holes, showing 7° anterior lateral flexion and 20° backward twist, continuing to the distal part; the distal part is located on the anterolateral part of the lower humerus and contains 4 locking holes , in a double-row symmetrical distribution. The four corners of the distal and proximal ends of the bone plate each have a round hole with a diameter of 2 mm, which is used to temporarily place Kirschner wires. The invention conforms to the anatomical characteristics of the anterolateral side of the middle and lower part of the humerus, so that the screw can be placed perpendicular to the bone plate and the bone surface at the same time. The sliding pressurization hole in the proximal part can realize the sliding pressurization effect. The design of double-row nail holes on the distal side can allow more screws to be placed and provide more reliable fixation.

Description

Technical field: [0001] The invention relates to a medical bone plate, which is placed on the anterolateral side of the middle and lower part of the humerus and used for fixing fractures of the middle and lower part of the humerus. Background technique: [0002] The anatomical shape of the middle and lower part of the humerus is special. It is the junction of the cylindrical shape and the triangular shape. Open reduction and internal fixation with plate fixation has always played a dominant role in the surgical treatment of middle and lower humeral fractures. Internal fixation materials include compression plates, bridging plates, locking plates, and locking compression plates. The anterolateral approach of the humerus is a commonly used approach in clinical practice. It can easily find and protect the radial nerve in the space between the brachioradialis and the brachialis, so as to avoid damage to the radial nerve. Therefore, the anterolateral surface of the humerus is pla...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing straight humerus bone plate is difficult to attach well to the bone surface and there are few fixation screws at the distal end of the fracture, the present invention provides an anatomical locking bone plate in the middle and lower part of the humerus, which is designed according to the anatomical characteristics of the middle and lower part of the humerus , to achieve a good attachment of the bone plate and the bone surface, increase the proficiency of the fixation screws at the distal end of the fracture, and improve the stability after reduction and fixation

Images