Appropriate compression values for the transtibial prosthesis using the AERO prosthetic liner
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Issued Date
2025-01-01
Resource Type
ISSN
03093646
eISSN
17461553
Scopus ID
2-s2.0-105002775427
Journal Title
Prosthetics and Orthotics International
Rights Holder(s)
SCOPUS
Bibliographic Citation
Prosthetics and Orthotics International (2025)
Suggested Citation
Miyata Y., Nutchamlong Y., Guerra G., Sasaki K. Appropriate compression values for the transtibial prosthesis using the AERO prosthetic liner. Prosthetics and Orthotics International (2025). doi:10.1097/PXR.0000000000000446 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/109754
Title
Appropriate compression values for the transtibial prosthesis using the AERO prosthetic liner
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Author's Affiliation
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Abstract
Positive model rectification is a key factor in providing a comfortable and successful transtibial prosthetic socket fitting. This study aimed to assess whether a 4% compression value in 3- and 5-mm thickness affordable ethylene-vinyl acetate roll-on (AERO) liners yields acceptable comfort and pressure distribution for transtibial prosthetic users. Stump socks were used to adjust volume in the fitting process with a socket compressed to 4%, and pressure data were collected using 6 force-sensing resistor (FSR400) sensors placed in areas sensitive and tolerant to pressure. Peak pressure was collected from 40 steps, and pressure uniformity was calculated using the coefficient of variation in 2-min walking on the treadmill. The socket comfort score was collected after the trial. Appropriate compression values, pressure distribution, and socket comfort score were analyzed using Wilcoxon signed-rank tests, and effect size was determined using Cliff’s delta. The study found that a 4.95% compression was optimal for a 3-mm thickness liner, whereas a 4.5% compression suited a 5-mm liner better for comfort. Moreover, the study observed a small similarity in pressure distribution between liners, as indicated by Cliff’s delta, with the 5-mm liner possibly providing more even pressure because of its thickness. Despite being made of the same material, liners with different thicknesses distribute pressure differently. Therefore, this study suggests that a 4% universal compression value in the affordable ethylene-vinyl acetate roll-on liner may be effective for use in a clinical setting. Future studies should include more participants to identify the appropriate compression for a variety of residual limbs.