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All Journal SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) Journal of Research in Industrial Engineering and Management
Muslim, Khoirul
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Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Other

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Pengaruh Jenis Sendi Lutut Kaki Prostetik Dan Postur Tubuh Statis Terhadap Aktivitas Otot Dan Rating of Percieved Discomfort (RPD) Pada Pengguna Kaki Prostetik Dewati, Alifta Agdiana; Muslim, Khoirul
Journal of Research in Industrial Engineering and Management Vol 2 No 2 (2024): November 2024
Publisher : Program Studi Teknik Industri, Fakultas Teknologi Industri, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61221/jriem.v2i2.32

Abstract

Differences in prosthetic leg design and mechanism affect lower limb muscle activity. Unbalanced muscle activity has the potential to reduce the function of physical mobility and change the balance point which has an impact on reducing performance, causing a decrease in the productivity of people with amputation disabilities. This study aims to determine the effect of awkward body posture and type of prosthetic foot on muscle activity in prosthetic foot users. This study used a within subject design with a total of six participants. Independent variables include body posture and type of prosthetic foot. Electromyography signal measurements on the biceps femoris (BF), gactrosnemius (GC), rectus femoris (RF), erector spinae (ES) muscles were performed to evaluate the level of muscle activity. Electromyography signals were processed with a 10-450Hz band-pass filter. ANOVA Repeated Measure obtained the results of awkward posture affecting muscle activity, especially in GC, BF, and ES muscles in the normal leg. In conclusion, the type of prosthetic leg does not affect muscle activity, but body posture has a significant effect on muscle activity although not in all muscles. This study can be used as advice to transfemoral amputation patients to use prosthetic feet that can reduce the risk of WMSDs so as to improve daily performance like normal individuals.
Empowering Disability Communities through Inclusive Transfemoral Prosthesis Co-Design with a Local SME in Indonesia Muslim, Khoirul; Nuryamsi, Dias; Kurnianto, Rifko Rahmat; Mihradi, Sandro
SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) Vol. 6 No. 1 (2025)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/spekta.v6i1.13091

Abstract

Background: Lower-limb loss poses significant challenges to mobility, employability, and social participation for many individuals in low- and middle-income countries. In Indonesia, the high cost of imported prosthetics has prompted community-based small enterprises to produce low-cost transfemoral devices. Contribution: This study contributes to support a local prosthetics workshop (Independent Disabled Creativity Foundation/IDCF) by integrating user feedback and basic functional assessments to guide improvements to a transfemoral prosthesis prototype. Method: Seven transfemoral amputees completed the Locomotor Ability Index (LCI), then performed standing, walking, and stair climbing tasks assessed by the Amputee Mobility Predictor with Prosthesis (AMPPRO), Rating of Perceived Discomfort (RPD) questionnaire, and Post-test Interview with improvement concepts using the SCAMPER (Substitute, Combine, Adapt, Modify, Put to Other uses, Eliminate, Rearrange) creativity method. Results: Participants achieved independent ambulation (mean LCI = 51.00 ± 5.10; AMPPRO = 42.29 ± 3.15, K3–K4 classification). Common discomfort was reported in the amputated thigh, sound-side thigh, and ankle. Design adjustments were collaboratively proposed, including socket fit improvement, knee joint reinforcement, and coupler alignment. Conclusion: This study highlights the value of structured user feedback in guiding local prosthetic refinement. It demonstrates how participatory methods can support inclusive design and technical strengthening for community-based production.
Co-Authors Dewati, Alifta Agdiana Kurnianto, Rifko Rahmat Nuryamsi, Dias Raden Muhammad Mihradi