The effects of transverse rotation angle on compression and effective lever arm of prosthetic feet during simulated stance

Major, MJ, Howard, D, Jones, R and Twiste, M 2012, 'The effects of transverse rotation angle on compression and effective lever arm of prosthetic feet during simulated stance' , Prosthetics and Orthotics International, 36 (2) , pp. 231-235.

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Abstract

Background and Aim: Unlike sagittal plane prosthesis alignment, few studies have observed the effects of transverse plane alignment on gait and prosthesis behaviour. Changes in transverse plane rotation angle will rotate the points of loading on the prosthesis during stance and may alter its mechanical behaviour. This study observed the effects of increasing the external transverse plane rotation angle, or toe-out, on foot compression and effective lever arm of three commonly prescribed prosthetic feet. Technique: The roll-over shape of a SACH, Flex, and single-axis foot was measured at four external rotation angle conditions (0°, 5°, 7°, and 12° relative to neutral). Differences in foot compression between conditions were measured as average distance between roll-over shapes. Discussion: Increasing the transverse plane rotation angle did not affect foot compression. However, it did affect the effective lever arm, which was maximised with the 5° condition, although differences between conditions were small.

Item Type: Article
Schools: Schools > School of Health Sciences > Centre for Health Sciences Research
Schools > School of Computing, Science and Engineering
Journal or Publication Title: Prosthetics and Orthotics International
Publisher: Sage Journals
ISSN: 0309-3646
Related URLs:
Depositing User: M Twiste
Date Deposited: 05 Jun 2017 13:46
Last Modified: 08 Aug 2017 17:59
URI: http://usir.salford.ac.uk/id/eprint/42507

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