DESIGN OF KNEE JOINT PROSTHETIC ELEMENTS MADE OF COMPOSITES

Keywords: knee joint prosthesis, fiberglass, bar element, stress-strain behavior

Abstract

Aim. To develop an innovative four-bar mechanical knee-joint prosthesis made of composites. Materials and methods. Ground reaction force measurements were taken with the Xsens motion capture system, involving a healthy volunteer and an individual with a prosthetic leg walking on a treadmill at 3 km/h. The specimen of epoxy resin fiberglass was used for bar testing. A 3D model of the Total Knee 1000/2000 knee joint prosthesis (Össur, Iceland) was generated using the SolidWorks package. Mechanical testing of a bar element was carried out with the Instron 5900R, and stress-strain analysis of both the model specimen and the 3D knee joint prosthesis was conducted using the finite element method (ANSYS package). Results. A new construction of a four-bar mechanical knee-joint prosthesis made of composites was proposed. Based on the data obtained from individuals walking on a treadmill at 3 km/h, the study shows that the prosthesis experiences significant compressive loads only in the heel-to-toe phase. In this case, the load on the prosthesis can be twice the weight of a person. The new design of the knee prosthesis involves the use of high-strength fiberglass in the bar elements instead of the expensive titanium and aluminum alloys of a similar prosthesis from Össur (Iceland). Calculation of loads in prosthetic elements and experiments on model specimens show that new bar elements can have a weight two to three times less than that of the analogue. This allows us to consider composites as promising for the manufacture of new specimens of knee prostheses.

Author Biographies

S. Sapozhnikov , South Ural State University, Chelyabinsk, Russia

Doctor of Technical Sciences, Professor, Chief Researcher, Department of Technical Mechanics, South Ural State University, Chelyabinsk, Russia.

A. Bezmelnitsyn , South Ural State University, Chelyabinsk, Russia

Candidate of Technical Sciences, Engineer, Center for Applied Research and Development of New Structural Materials, South Ural State University, Chelyabinsk, Russia.

M. Zhikharev , South Ural State University, Chelyabinsk, Russia

Candidate of Technical Sciences, Deputy Director of the Center for Applied Research and Development of New Structural Materials, South Ural State University, Chelyabinsk, Russia.

V. Epishev , South Ural State University, Chelyabinsk, Russia

Director of the Research Center for Sports Science, Associate Professor of the Department of Theory and Methods of Physical Education and Sport, South Ural State University, Chelyabinsk, Russia.

V. Erlikh , South Ural State University, Chelyabinsk, Russia

Doctor of Biological Sciences, Professor, Director of the Institute of Sport, Tourism and Service, South Ural State University, Chelyabinsk, Russia.

References

References on translit

Published
2024-01-22
How to Cite
Sapozhnikov, S., Bezmelnitsyn, A., Zhikharev, M., Epishev, V., & Erlikh, V. (2024). DESIGN OF KNEE JOINT PROSTHETIC ELEMENTS MADE OF COMPOSITES. Human. Sport. Medicine, 23(4), 163-171. https://doi.org/10.14529/hsm230420
Section
Rehabilitation and sports medicine

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