Biomechanical optimization of lower limb orthoses using dynamic surface polyectromyography

Mukul C. Talaty, Rahamin Seliktar, Alberto Esquenazi, Barbara Hirai

Research output: Contribution to conferencePaperpeer-review

Abstract

Preliminary testing was undertaken to determine whether mechanically constraining the ankle joint by an orthosis would produce changes in a suitably processed electromyography (EMG) signal which reflects changes in lower limb muscle demands. Anterior and posterior motion stops were used to vary alignments (range of motion) of an ankle foot orthosis with which the subjects walked. Ensemble averaged EMG profiles of five gait related muscles influenced by the orthosis were compared for various orthotic alignments. In some cases, these profiles were found to differ in a consistent manner for each of the four subjects in the study. Changes in muscle activity were also justified by biomechanical changes in gait due to the physical restrictions imposed by the brace. Results support prior clinical observations that surface EMG may be sensitive enough to discriminate between relatively minor changes in muscle activity due to different orthotic alignments.

Original languageEnglish (US)
Pages245-246
Number of pages2
StatePublished - 1994
EventProceedings of the 1994 International Mechanical Engineering Congress and Exposition - Chicago, IL, USA
Duration: Nov 6 1994Nov 11 1994

Other

OtherProceedings of the 1994 International Mechanical Engineering Congress and Exposition
CityChicago, IL, USA
Period11/6/9411/11/94

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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