Dynamic interface pressure distributions of two transtibial prosthetic socket concepts

Tim Dumbleton, Arjan W.P. Buis, Angus McFadyen, Brendan F. McHugh, Geoff McKay, Kevin D. Murray, Sandra Sexton

    Research output: Contribution to journalArticle

    Abstract

    In this study, we investigated and compared the dynamic interface pressure distribution of hands-off and hands-on transtibial prosthetic systems by means of pressure mapping. Of the 48 established unilateral amputees recruited, half (n = 24) had been wearing pressure-cast prostheses (IceCast Compact) and the other half (n = 24) had been wearing hand-cast sockets of the patellar tendon bearing design. We measured the dynamic pressure profile of more than 90% of the area within each prosthetic socket by means of four Tekscan F-Scan socket transducer arrays. We compared the interface pressure between socket concepts. We found that the distribution of dynamic pressure at the limb-socket interface was similar for the two intervention (socket prescription) groups. However, a significant difference was found in the magnitude of the interface pressure between the two socket concepts; the interface pressures recorded in the hands-off sockets were higher than those seen in the hands-on concept. Despite the differences in interface pressure, the level of satisfaction with the sockets was similar between subject groups. The sockets instrumented for this study had been in daily use for at least 6 months, with no residual-limb health problems.

    Original languageEnglish
    Pages (from-to)405-416
    Number of pages12
    JournalJournal of Rehabilitation Research and Development
    Volume46
    Issue number3
    DOIs
    Publication statusPublished - 1 Jan 2009

    Keywords

    • prosthesis
    • amputee
    • pressure measurement
    • dynamic interface pressure
    • prosthetic socket
    • rehabilitation

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    Dumbleton, T., Buis, A. W. P., McFadyen, A., McHugh, B. F., McKay, G., Murray, K. D., & Sexton, S. (2009). Dynamic interface pressure distributions of two transtibial prosthetic socket concepts. Journal of Rehabilitation Research and Development, 46(3), 405-416. https://doi.org/10.1682/JRRD.2008.01.0015