Assembled ankle joint talus side prosthesis

Abstract

The invention relates to the technical field of orthopedic implants, in particular to an assembled ankle joint talus side prosthesis, and aims to solve the problem that an integral talus side component in the prior art for ankle joint replacement cannot meet the dual purposes of ankle joint talus side surface replacement and bone defect filling clinically. The assembled ankle joint talus side prosthesis comprises: a talus articular surface prosthesis, wherein the lower side of the talus articular surface prosthesis is provided with a talus articular surface cavity, and threads connected with a screw type talus valve rod are arranged in the cavity; the screw type talus valve rod comprising a screw rod part and a porous nut part; and a talus gasket, wherein the screw type talus valve rod is connected with the threads in the talus articular surface cavity in a screwed mode through the screw rod part. According to the invention, the talus articular surface prosthesis, the screw type talus valve rod, the screw type talus valve rod gasket and the bone defect matching filling block are all formed by additive manufacturing, and through the structure formed by combining multiple components, the double requirements of ankle joint talus side surface replacement and bone defect filling clinically are met.

Description

technical field [0001] The invention relates to the technical field of orthopedic implants, in particular to a modular ankle joint talus side prosthesis. Background technique [0002] The ankle joint is composed of the talus, the distal end of the tibia, and the lower end of the fibula. It is divided into three parts: the head, the neck, and the body. Difficulty walking and even disability. [0003] Ankle joint surface replacement is one of the main diagnosis and treatment methods for reconstructing the structure and function of the ankle joint. Lesions on the talar side of the ankle joint often have joint surface lesions and cancellous bone lesions occurring simultaneously. The talar side of the ankle joint surface replacement prosthesis in the prior art The components are usually a single integral prosthetic component, which cannot meet the clinical dual purposes of surface replacement of the talar side of the ankle joint and filling of bone defects. Contents of the inv...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a modular ankle prosthesis on the talar side, which solves the problem that the talar side part of the ankle articular surface replacement prosthesis in the prior art is usually a single integral prosthesis part, which cannot meet the clinical needs of the upper ankle joint. The dual purpose problem of articular talar resurfacing and bone defect filling

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