Individual all-talus prosthesis having biological functions and making method of individual all-talus bone prosthesis

Abstract

The invention discloses an individual all-talus prosthesis having biological functions, which can prepare the talus prosthesis having individualizing and biological functions and a making method of the individual all-talus prosthesis. The making method of the individual all-talus prosthesis having biological functions comprises the following steps of obtaining raw data of talus of damaged sides and healthy sides; through image/backward design, obtaining a talus prosthesis model, and dividing the talus prosthesis model into a talonavicular hypozygal assembly and a tibiotalar joint facet assembly; performing 3D printing on the talonavicular hypozygal assembly, and designing a casting mould of the tibiotalar joint facet assembly; and through a 3D printing technique, printing the mould, through the mould, performing casting to obtain the tibiotalar joint facet assembly, and finally performing combination so as to obtain the astragalus prosthesis. The prosthesis comprises talonavicular hypozygal assembly, the talonavicular joint assembly and the tibiotalar joint assembly. Through the individual all-talus prosthesis having biological functions and the making method of the individual all-talus prosthesis, the motion function of the ankle joint can be guaranteed not to be influenced, individualized preparation can be realized, and the making cost of the prosthesis can be reduced.

Description

technical field [0001] The invention relates to the field of prosthesis manufacture, in particular to a personalized total talus prosthesis with biological functions and a manufacturing method thereof. Background technique [0002] Collapsing talus osteonecrosis is generally caused by the load-bearing damage of the talus body and excessive bone loss, which prevents ankle joint replacement surgery. Talar excision or four-joint fusion around the talus is usually used for treatment. The former can easily lead to instability around the talus. The latter can easily lead to limited ankle mobility. [0003] Therefore, there is no better solution at present. The use of talus resection often reduces the effect of the prosthesis and the instability around the talus. After a long time, a series of problems such as loosening will occur, and even need to be re-operated; using four joints around the talus Fusion surgery will lead to limited movement of the ankle joint, and the talus is a...

AI Technical Summary

Problems solved by technology

[0006] However, the biological function of the prosthesis disclosed in these public documents is mainly to solve the problem of rapid fusion and growth of the prosthesis through the combination of porous structure design and hydroxyapatite coating, and does not solve the postoperative instability around the talus or the limitation of ankle joint movement. key issues

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