Early observations of the effects of lateral wedge orthoses on lower limb muscle length and potential for exacerbating spasticity

Saeed Forghany, Richard Jones, Steve Preece, Chris Nester, Sarah Tyson

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Lateral wedge orthoses are often prescribed to correct varus deformity after stroke. Spasticity is implicated in varus deformity and is caused by velocity-related muscle length changes, so a lateral wedge may affect spasticity by manipulating foot and ankle kinematics which, in turn, may alter the length of these muscles. We sought to test this theory in healthy participants. Eight volunteers walked with no wedge and with lateral wedges of 5 and 8.5 degrees in both shoes. Qualysis motion capture system collected kinematic data and SIMM musculoskeletal modeling software calculated muscle tendon length of plantarflexor and peroneal muscle groups using 3-D ankle and knee joint angle data. The wedges increased ankle eversion (p
    Original languageEnglish
    Pages (from-to)319-326
    Number of pages7
    JournalProsthetics and Orthotics International
    Volume34
    Issue number3
    DOIs
    Publication statusPublished - Sept 2010

    Keywords

    • Lateral wedge orthoses
    • musculoskeletal modelling
    • spasticity
    • stroke

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