Optimization Characteristics of Revision Knee Joint Endo-Prostheses

Authors

DOI:

https://doi.org/10.20535/2521-1943.2025.9.4(107).339387

Keywords:

revision arthroplasty, patient-specific prostheses, knee joint, 3D modeling, strength, anatomical compatibility

Abstract

The study addresses the problem of reducing the mass of patient-specific revision knee joint endoprostheses while preserving their load-bearing capacity through the introduction of internal cavities. The relevance of this research is driven by the need to decrease mechanical loading on bone tissue, improve patient comfort, and reduce titanium alloy consumption in the production of individualized implants. Additive manufacturing technologies, in particular selective laser melting (SLM), allow the creation of complex internal geometries that are unattainable by conventional machining methods. The aim of this work is to determine the optimal balance between mass reduction and preservation of strength characteristics by means of finite element analysis of two hollow stem configurations based on a 75 mm long reinforced stem. Numerical simulations were conducted using the Ansys Student 2024 R2 software package. Quantitative results demonstrated mass reduction of 25–35% accompanied by a corresponding increase in maximum stresses of 6–20%, depending on cavity configuration. The findings confirm the feasibility of achieving a substantial reduction in implant weight with an acceptable increase in stresses that does not exceed the structural safety margin.

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Published

2025-12-29

How to Cite

[1]
Y. Ovcharenko, “Optimization Characteristics of Revision Knee Joint Endo-Prostheses”, Mech. Adv. Technol., vol. 9, no. 4(107), pp. 409–414, Dec. 2025.

Issue

Vol. 9 No. 4(107) (2025)

Section

Mechanics

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Copyright (c) 2025 Єгор Овчаренко

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