Wing type inner and outer malleolus adjustable tumor half-ankle joint prosthesis

Abstract

The invention discloses a wing type inner and outer malleolus adjustable tumor half-ankle joint prosthesis. The wing type inner and outer malleolus adjustable tumor half-ankle joint prosthesis comprises a tibia far-end prosthesis, a lateral malleolus prosthesis, a medial malleolus prosthesis and a prosthesis cover plate, a cover plate connecting part is arranged on one side of the tibia far-end prosthesis, a lateral malleolus connecting part is arranged on the outer side of the lower portion of the cover plate connecting part, a medial malleolus connecting part is arranged on the inner side of the lower portion of the cover plate connecting part, the lateral malleolus prosthesis and the medial malleolus prosthesis are connected to the lateral malleolus connecting part and the medial malleolus connecting part respectively, and the prosthesis cover plate is fixed to the tibia far-end prosthesis through screws. The angles of the lateral malleolus prosthesis and the medial malleolus prosthesis relative to the tibia far-end prosthesis are adjustable. The joint prosthesis disclosed by the invention adopts a monopole type, so that the own sclerotin of a patient can be reserved to the greatest extent, and the looseness and infection risks of the prosthesis are small. The adjustable design is adopted, the angles of the lateral malleolus prosthesis and the medial malleolus prosthesis can be freely adjusted relative to the tibia far-end prosthesis so as to adapt to the talus of different sizes, the universality is high, the time for a patient to wait for prosthesis manufacturing can be shortened, meanwhile, the prosthesis is manufactured in batches, and the cost of a single piece is low.

Description

technical field [0001] The invention relates to the field of artificial prosthesis replacement, in particular to a wing-type tumor hemi-ankle joint prosthesis with adjustable inner and outer malleolus. Background technique [0002] The distal tibia is one of the predilection sites for malignant bone tumors, and the ankle joint, as the joint with the highest load in the human body, is often affected by it. After distal tibiofibular resection, conventional treatment methods include allograft bone graft, fibula autograft, bone transport, etc., but ankle arthrodesis is unavoidable, that is, permanent loss of ankle joint function, and only neutral position can be maintained. The reconstruction method of ankle prosthesis has been accepted by more and more people because it can preserve most of the ankle joint function. At present, most of the common ankle prostheses are bipolar, that is, the distal part of the tibia and the talus. The installation of the prosthesis is complicated...

AI Technical Summary

Problems solved by technology

At present, most of the common ankle prostheses are bipolar, that is, the distal part of the tibia and the talus. The installation of the prosthesis is complicated, and it causes unnecessary bone loss of the talus. It is a customized type, that is, a distal tibial prosthesis component is customized according to the patient's distal tibia or matching talus. The production time of the prosthesis is long, and the patient has a long time to wait for the replacement of the prosthesis, which increases the risk of infection and hospitalization time, and the customized The high cost of prostheses increases the cost of medical treatment for patients

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