Astragalus partial restoration body with porous structure and design and manufacturing method thereof

Abstract

The invention discloses an astragalus partial restoration body with a porous structure and a design and manufacturing method thereof. The method includes the following steps of (1) on the basis of CTdata of a patient, carrying out model extraction on an astragalus part, conducting three-dimensional model reconstruction, and exporting an stl format file; (2) importing the stl format file into three-dimensional modeling software Rhinoceros for carrying out inverse modeling design; (3) carrying out extraction and fitting on partial necrotic curved surfaces to obtain a curved surface matched withthe curvature of surrounding healthy carved surfaces; (4) utilizing a fitting curved surface to carry out design of the restoration body, determining the positions of fixing nails, and utilizing a grasshopper insert to complete modeling of the porous structure; (5) utilizing a laser selection area melting technique to prepare the personalized astragalus partial restoration body; (6) polishing andbuffing the curved surface of the upper surface of the restoration body, and carrying out acid etching treatment on the lower porous structure. By adopting the astragalus partial restoration body with the porous structure and the design and manufacturing method thereof, the fast restoration effect can be achieved, the waiting time of the patient is shortened, and the response speed of supplying restoration prostheses is increased.

Description

technical field [0001] The invention relates to the field of design and processing of repair prostheses, in particular to a personalized reverse design and manufacturing method of a partial talus prosthesis with a porous structure. Background technique [0002] The talus plays an important role in the biomechanics of the human foot. Human weight is transmitted from the tibia to the foot bone through the talus, and when a person moves the foot, the stress generated by the peroneal muscle also acts on the talus. In addition, the top of the longitudinal arch formed by the talus can absorb the shock from the ground through the arch. Its biomechanical movement is complex and plays a vital role in human movement. The local necrosis of the talus often causes serious consequences because it is latent. If the local necrosis spreads to other parts of the talus, it will lead to massive damage to the intraosseous structure and is extremely difficult to heal. Therefore, early treatment...

AI Technical Summary

Problems solved by technology

The local necrosis of the talus often causes serious consequences because it is latent. If the local necrosis spreads to other parts of the talus, it will cause a large amount of damage to the intraosseous structure and is extremely difficult to heal.

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