Anterolateral talar sinus tarsi approach with mini locking plate

Abstract

The invention discloses a talus anterolateral tarsal sinus approach miniature locking steel plate which comprises a transverse first body and a longitudinal second body. The second body is connected to the tail end of the first body, the second body and the first body are integrally formed, locking holes are formed in the first body and the second body, and the diameters of the locking holes are 3.5 mm; the length of the first body is 2-3.5 cm, the length of the second body is 1-2.3 cm, the thicknesses of the first body and the second body are 2.0-2.5 mm, and the widths of the first body and the second body are 1.0-1.5 cm. The talus anterolateral tarsal sinus approach miniature locking steel plate has the advantages that reduction or bone grafting can be carried out on bone blocks of articular surfaces by the aid of anterolateral tarsal sinus approaches under direct vision, and the talus anterolateral tarsal sinus approach miniature locking steel plate is low in talus blood supply injury; the talus anterolateral tarsal sinus approach miniature locking steel plate which is an ankle miniature steel plate can be arranged below the outsides of taluses in tarsal sinuses, influence on joint activities and blood supply can be reduced as far as possible, and the anterolateral tarsal sinus approach miniature locking steel plate is applicable to Hawkins II-type, III-type and IV-type and Sneppen II-type, IV-type and V-type talus fracture.

Description

technical field [0001] The invention relates to a medical device, in particular to a miniature locking steel plate for the anterolateral tarsal sinus approach, which belongs to the fracture internal fixation steel plate series in the field of orthopedic trauma. Background technique [0002] The talus is located in the ankle and is an important bone structure in the ankle. It has a unique structure, the weight of the whole body is conducted through the talus, the load is heavy, and the blood supply is poor. The talus has no muscle attachment, but has 7 articular surfaces and 10 ligament attachments, and its blood supply mainly comes from ligament attachment points and nourishing blood vessels, such as figure 1 , figure 2 A schematic diagram of the blood supply to the talus is shown. refer to image 3 , When the talus is fractured, especially when the talus is dislocated, its blood supply is destroyed, which can easily lead to nonunion, pseudarthrosis and talus necrosis. ...

AI Technical Summary

Problems solved by technology

like Figure 4 As shown in A and 4B, the lag screw can longitudinally compress the talus, but it is not suitable for fractures of the neck or articular surface, which may easily cause shortening of the talus and uneven articular surface, so it is only suitable for simple fractures; Kirschner wire Poor fixation strength, rarely used alone; Figure 5 As shown in A and 5B, most of the steel plates are 1 / 3 tubular, reconstructed steel plates, and ankle micro-plates. The shape of the former two does not conform to the shape of the talus. The original strength, the latter is too soft, and the strength is far from meeting the mechanical needs of the talus

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