Surface profile analysis of laminated transfemoral prosthetic socket fabricated with different ratios of epoxy resin and acrylic resin

Zainuddin, Nik Abdul Muiz Nik and Abd Razak, Nasrul Anuar and Ab Karim, Mohd Sayuti and Abu Osman, Noor Azuan (2023) Surface profile analysis of laminated transfemoral prosthetic socket fabricated with different ratios of epoxy resin and acrylic resin. Scientific Reports, 13 (1). ISSN 2045-2322, DOI https://doi.org/10.1038/s41598-022-21990-y.

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Abstract

Acrylic and epoxy are common types of resin used in fabricating sockets. Different types of resin will affect the internal surface of a laminated socket. This paper is to determine the best combination of ratio for epoxy and acrylic resin for a laminated prosthesis socket and to evaluate the surface profile analysis of different combinations of laminated prosthetic sockets for surface roughness. Transfemoral sockets were created using various resin-to-hardener ratios of 2:1, 3:1, 3:2, 2:3, and 1:3 for epoxy resin and 100:1, 100:2, 100:3, 100:4, and 100:5 for acrylic resin. Eight layers of stockinette consisting of four elastic stockinette and four Perlon stockinette were used. A sample with a size of 4 cm x 6 cm was cut out from the socket on the lateral side below the Greater Trochanter area. The Mitutoyo Sj-210 Surface Tester stylus was run through the sample and gave the Average Surface Roughness value (Ra), Root Mean Square Roughness value (Rq), and Ten-Point Mean Roughness value (Rz). Epoxy resin shows a smoother surface compared to acrylic resin with Ra values of is 0.766 & mu;m, 0.9716 & mu;m, 0.9847 & mu;m and 1.5461 & mu;m with 3:2, 3:1, 2:1 and 2:3 ratio respectively. However, for epoxy resin with ratio 1:3, the resin does not cure with the hardener. As for acrylic resin the Ra values are 1.0086 & mu;m, 2.362 & mu;m, 3.372 & mu;m, 4.762 & mu;m and 6.074 & mu;m with 100: 1, 100:2, 100:5, 100:4 and 100:3 ratios, respectively. Epoxy resin is a better choice in fabricating a laminated socket considering the surface produced is smoother.

Item Type: Article
Funders: Ministry of Higher Education Malaysia via Fundamental Research Grant Scheme (FRGS/1/2018/TK03/UM/02/9), Universiti Malaya
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering > Department of Biomedical Engineering
Faculty of Engineering > Department of Mechanical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 21 Jul 2025 02:27
Last Modified: 21 Jul 2025 02:27
URI: http://eprints.um.edu.my/id/eprint/50890

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