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The use of Dynamic Electromyography in Gait Analysis

Research Area: Biomedicinski inzenjering Year: 2011
Type of Publication: Article Keywords: dynamic electromyography, gait, cerebral palsy
  • R., Krasnik
  • A., Mikov
  • Iilć, Vojin
  • Jorgovanović, Nikola
  • C, Demesi Drljan
Journal: HealthMed Volume: 5
Number: 4 Pages: 888-893
ISSN: 1840-2291
Journal's impact factor: 0.331
Background. Normal gait is a harmonious, energetically economic motoric activity resulting from a sequence of a human body steps in space. Each gait cycle includes the Support Phase, and theSwing Phase. Many factors may induce a gait disorder, which cam be observed at a clinical examination of a patient, and by electromyography, too. Objective: To apply and evaluate dynamic electromyography holter system in gait analysis. Material and Methods: Dynamic electromypgraphy (EMG) gait analysis was performed in a pilot study at the Clinic for Children’s Habilitation and Rehabilitation, in cooperation with the Faculty of Technical Sciences.The signal recording was performed by the EMG holter system designed at the Department for Systems and Signals of the Faculty for Technical Sciences of Novi Sad, providing for recording of up to four EMG signals, and eight signals from different sensor types. The recorded signals were saved in the USB flash memory. Within a pilot study at the Clinic for Children’s Habilitation and Rehabilitation, gait analysis was performed in one patient with a normal gait, and two patients with cerebral palsy (diplegia and hemiparesis). This EMG holter system provided high-quality scans, suggesting that one leg gait stages could also be assessed by this system, on the basis of the obtained force-sensing resistors signals from both legs Results: The results included the gait scans from a healthy child (m. tibialis ant. and m. gastrocnemius conntractions), scans of the same muscle contractions in a girl with hemiparesis, and scans of m. gastrocnemius contractions in another girl with diplegia, taken prior to and in a month following the botulinum toxin type A injection. Conclusion: Dynamic EMG gait analysis provides the information about a patient’s functional status which may be useful in evaluating the patients themselves, as well as in selecting the therapy mode and monitoring its effects. The dynamic electromyography device designed at the Faculty of Technical Sciences in Novi Sad is one of possible technical solutions suitable for wide cliinical application.