An edge attachment method for a porous implant structure for partial talar defects

CN122208342APending Publication Date: 2026-06-16HEBEI UNIV OF SCI & TECH

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: HEBEI UNIV OF SCI & TECH
Filing Date: 2026-03-13
Publication Date: 2026-06-16

AI Technical Summary

Technical Problem

Existing porous talus prostheses suffer from poor fit, insufficient osseointegration stability, inadequate structural integrity, and poor mechanical properties in their design and application. These issues make it difficult to achieve a close fit between the prosthesis and the host bone, affecting the osseointegration effect and the lifespan of the prosthesis.

Method used

By accurately locating the prosthesis's lower surface, extracting the edge contour based on connected component analysis, and generating a minimum spanning tree path by combining polar coordinate partitioning and Prim's algorithm, a non-intersecting minimum spanning tree path is generated using a porous structure model and Boolean operations on the trabecular bone structure, thus achieving a close fit and stable connection between the prosthesis edge and the host bone.

Benefits of technology

It significantly improves the speed and quality of osseointegration, improves stress distribution, extends the service life of the prosthesis, enhances the fatigue resistance and structural durability of the prosthesis, and achieves stable biological fixation between the prosthesis and the host bone.

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Abstract

The application discloses a kind of porous implant structure edge connection methods for partial talar defect, belong to the field of orthopedic implants.The present application solves the problem that the edge structure of the existing talar prosthesis porous implant is not effectively connected and integrated, resulting in poor fit between the prosthesis and the host bone defect edge, micro-gap, unstable bone integration, and stress concentration caused by incomplete edge structure, poor overall mechanical performance.The present application realizes the close fit of the edge filling structure and the host bone by precise prosthesis lower surface positioning, edge contour extraction based on connected component analysis, combination of polar coordinate partition and Prim algorithm minimum spanning tree path generation, and interactive visualization correction means, constructs an ordered and stable bone ingrowth guide path, improves the stress distribution of the prosthesis, and significantly improves the bone integration stability, structural integrity and long-term service life of the prosthesis.

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