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Vol. 24, Art. 13 (pp. 155-165)    |    2023       

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Comparative analysis of the strength of socket transtibial prostheses made by traditional and additive technology

Prikhodko S.A., Nikolaenko A.N., Erisov Ya.A., Kuzin A.O.

Federal State Budgetary Educational Institution of Higher Education «Samara State Medical University» of the Ministry of Healthcare of the Russian Federation
Samara State Medical University
Federal State Autonomous Educational Institution of Higher Education «Samara National Research University named after Academician S.P. Korolev»
Samara National Research University

Brief summary

Additive manufacturing or 3D printing in orthopedic technology is a modern and promising way to manufacture individual prosthetic modules (sockets). The issue of mechanical strength and durability of 3D printed sockets remains relevant, and patient safety directly depends on these characteristics. The aim of this study was to assess the possibility of safe use of additive lower limb socket prostheses in patients with transtibial and transfemoral amputation, made by the FDM method, by conducting static bench tests. As a material for the manufacture of additive sockets, a structural composite based on ABS with a fiberglass content of 12% was chosen. The study of the ultimate strength was carried out as part of the exoprosthesis of the lower leg under static loading. The characteristics of additive sockets were compared with similarly shaped sockets made using lamination technology from a two-component thermoresin. The ultimate strength of sockets made from 12% fiberglass ABS-based structural composite by additive manufacturing exceeded the proof test force of 6840 H. Thus, these products can be safe for use as part of a complete prosthesis design for patients with transtibial and transfemoral amputations and are recommended for clinical testing.


Key words

ISO 10328, strength testing socket, 3D printing socket, technical orthopedics, fused deposition modeling (FDM), artificial lower limb

Reference list

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