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All Journal Journal of Prosthetics Orthotics and Science Technology (JPOST)
Yamamoto, Hiroaki
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Health Professions Materials Science & Nanotechnology Nursing Public Health

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Effect of Soft Knee Brace on Shank Movement in Running Kitagawa, Kodai; Murakami, Tomoya; Wada, Chikamune; Yamamoto, Hiroaki
Journal of Prosthetics Orthotics and Science Technology Vol. 3 No. 2 (2024): Journal of Prosthetics Orthotics and Science Technology (JPOST)
Publisher : Poltekkes Kemenkes Jakarta I

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36082/jpost.v3i2.1945

Abstract

Background: Soft knee braces are used for the protection and treatment of knee injuries in light-intensity activities of daily life. Soft knee braces have several functions, such as stabilizing and supporting the lower limb posture. However, previous studies did not investigate the effects of a soft knee brace on the lower limbs during vigorous-intensity activities. Aims: The objective of this study was to investigate the effect of a soft knee brace on the physical load and stability of the lower limb during running as a vigorous-intensity activity. Methods: Participants were asked to run with or without a soft knee brace, and lower-limb movements during running were measured using an inertial sensor on the shank. Results: The result showed that soft knee brace significantly reduced the magnitude and mediolateral standard deviation of shank acceleration. Conclusion: The results of this study indicate the possibility that wearing a soft knee brace can improve the physical load and stability of the lower limbs during running.  
Measurement of the Varus Thrust of a Single-Leg Standing Position Using Strain Sensors: Determining the Effectiveness of Knee Orthosis Yamamoto, Hiroaki; Mori, Masahiro; Tashiro, Koichi; Endo, Masahide; Kitagawa, Kodai
Journal of Prosthetics Orthotics and Science Technology Vol. 4 No. 2 (2025): Journal of Prosthetics Orthotics and Science Technology (JPOST)
Publisher : Poltekkes Kemenkes Jakarta I

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Abstract

Background: Osteoarthritis of the knee is based on degenerative changes in the articular cartilage, resulting in varus thrust. Therefore, the treatment involves orthosis therapy to reduce the mechanical stress. Aims: The varus thrust of a young healthy subject is measured. Then, the relationship between orthosis and varus thrust is clarified. The purpose of this study was to assist in orthosis therapy for patients with knee osteoarthritis. Methods: The subjects were 15 young healthy subjects. The varus thrust during single-leg standing with and without orthosis was measured by strain sensors. Comparisons between groups were analyzed using the Wilcoxon rank-sum test. The statistical software fair was JSTAT for Windows, and the significance level was set at 5%. Results: Significant differences in strain sensor elongation were found between the groups with and without the orthosis. Conclusion: It was confirmed that the knee orthosis suppressed the varus thrust. The future challenge is to measure patients with knee osteoarthritis.
Co-Authors Endo, Masahide Kitagawa, Kodai Mori, Masahiro Murakami, Tomoya Tashiro, Koichi Wada, Chikamune