Design and mechanical testing of an adjustable posterior leaf spring ankle-foot orthosis for patients with drop foot
Issued Date
2024-01-01
Resource Type
ISSN
03093646
eISSN
17461553
Scopus ID
2-s2.0-85184821215
Pubmed ID
37615616
Journal Title
Prosthetics and Orthotics International
Volume
48
Issue
1
Start Page
39
End Page
45
Rights Holder(s)
SCOPUS
Bibliographic Citation
Prosthetics and Orthotics International Vol.48 No.1 (2024) , 39-45
Suggested Citation
Khaing M.S., Samala M., Guerra G., Wisessint A. Design and mechanical testing of an adjustable posterior leaf spring ankle-foot orthosis for patients with drop foot. Prosthetics and Orthotics International Vol.48 No.1 (2024) , 39-45. 45. doi:10.1097/PXR.0000000000000278 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/97252
Title
Design and mechanical testing of an adjustable posterior leaf spring ankle-foot orthosis for patients with drop foot
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Author's Affiliation
Corresponding Author(s)
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Abstract
Objectives:This study aimed to design an adjustable posterior leaf spring (PLS) ankle-foot orthosis (AFO) with an affordable material in low-income countries and investigate the mechanical properties between an adjustable PLS AFO and a standard PLS AFO.Study Design:Static and dynamic mechanical testing.Methods:This study preliminarily tested a new adjustable PLS AFO against a standard PLS AFO. Each AFO design was tested with mechanical testing using an Instron 8801 universal testing machine.Results:The stiffness value of the adjustable PLS AFO was greater than that of the standard PLS AFO during the static loading test. The energy dissipated ratios were lower in the adjustable PLS AFO than in the standard PLS AFO. After 110,000 cycles of fatigue testing, the distal rivet of the adjustable PLS AFO became loose, although the standard PLS AFO had no problem.Conclusions:The novel adjustable PLS AFO achieved noninferior mechanical properties except fatigue strength. The connecting area always initiated fatigue failure. It is suggested that this area must be prevented for stress concentration. As a preliminary study, this study is fundamental for future studies.