3D-printing-based replacement prosthesis for necrotic surface of talus

A 3D printing, talus technology, used in 3D printing, prostheses, bone implants, etc.

Pending Publication Date: 2021-05-18
XIAN HONGHUI HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The invention provides a surface replacement prosthesis for osteonecrosis of the talus to solve the current clinical appli

Method used

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  • 3D-printing-based replacement prosthesis for necrotic surface of talus
  • 3D-printing-based replacement prosthesis for necrotic surface of talus
  • 3D-printing-based replacement prosthesis for necrotic surface of talus

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Embodiment

[0030] see figure 1 with figure 2 A surface replacement prosthesis based on 3D printing for osteonecrosis of the talus is shown, including a replacement prosthesis body 1 made by 3D printing technology. The three-dimensional CT data of the obviously collapsed side is obtained; the lower end surface of the replacement prosthesis body 1 is the talar bone contact surface 101 with a straight structure, and the talar bone contact surface 101 is in contact with the osteotomy surface, and the upper end surface of the replacement prosthesis body is the talar body prosthesis On the surface 102, two sets of locking screw holes 2 are opened obliquely downward on the front side of the prosthesis surface 102 of the talar body, and a talar stabilizing post 3 is arranged obliquely downward in the center of the talar contact surface 101; in other embodiments, the locking screw The number of holes 2 and talus stabilization columns 3 can be made by 3D printing according to the actual situatio...

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Abstract

The invention discloses a 3D-printing-based replacement prosthesis for a necrotic surface of a talus. The 3D-printing-based replacement prosthesis comprises a replacement prosthesis body produced through a 3D printing technology, wherein a form of the replacement prosthesis body is obtained according to a three-dimensional CT data mirror image of the surface of a talus of an opposite side (healthy side) or three-dimensional CT data of an affected side free of obvious collapse; and one face of the replacement prosthesis body is a talus contact face of a straight structure, the other face of the replacement prosthesis body is a talus body prosthesis face, a plurality of groups of locking screw holes are formed in the front side of the talus body prosthesis face in an oblique downward manner, and at least one talus stabilizing column are arranged in the center of the talus contact face in an oblique downward manner. According to the 3D-printing-based replacement prosthesis for the necrotic surface of the talus, the clinical application problem in clinics at present that the surface of the talus is necrotic, but a joint surface of a distal end of a tibia is free of obvious degradation is solved, intraoperative bone cutting is accurate, the surgical operation time is short, and bleeding and injury are little.

Description

technical field [0001] The invention relates to the technical field of orthopedic medical devices, in particular to a 3D-printed talus osteonecrosis surface replacement prosthesis. Background technique [0002] Osteonecrosis of the talus is common in clinical practice, most commonly in the body of the talus. In some patients, there is no obvious degeneration or osteoarthritis in the distal tibia, but avascular necrosis in the fornix of the talus. For this condition, clinical treatment options are limited. If there is less necrosis, only cystic degeneration of the talus, or subchondral bone lesions, regional and localized, microfracture techniques, arthroscopic debridement, drilling, osteochondral transplantation, etc. can be used; if the degeneration is concentrated in the talus fornix If the medial or lateral side of the tibia exists, and there is an abnormal force line of the distal tibia, supra-ankle osteotomy may be considered to correct the force line and relieve press...

Claims

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Application Information

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IPC IPC(8): A61F2/28A61F2/30A61F2/42
CPCA61F2/28A61F2/2846A61F2/30749A61F2/30771A61F2/30942A61F2/4202A61F2002/2835A61F2002/285A61F2002/30784A61F2002/30934A61F2002/30948A61F2002/30985A61F2002/4207A61F2310/00023A61F2310/00407A61F2310/0088
Inventor 梁晓军杨杰
Owner XIAN HONGHUI HOSPITAL
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