Dynamic interface pressure distributions of two transtibial prosthetic socket concepts

A.W.P. Buis, T. Dumbleton, B.F. McHugh, A. McFadyen, G. McKay, K. Murray, Sandra Sexton, Action medical research (Funder)

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

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)405-415
Number of pages10
JournalJournal of Rehabilitiation Research and Development
Volume46
Issue number3
DOIs
Publication statusPublished - 2009

Keywords

  • amputee
  • dynamic interface pressure
  • hand cast
  • patellar tendon bearing
  • pressure cast
  • pressure measurement
  • prosthesis
  • prosthetic socket
  • rehabilitation
  • transtibial

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