Static ankle impedance in stroke and multiple sclerosis: a feasibility study.

Hyunglae Lee, Tara Patterson, Jooeun Ahn, Daniel Klenk, Albert Lo, Hermano Igo Krebs, Neville Hogan

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Quantitative characterization of ankle mechanical impedance is critical for understanding lower extremity function in persons with neurological disorders. In this paper, we examine the feasibility of employing an ankle robot and multivariable analysis to determine static ankle impedance in 4 patients: 1 with multiple sclerosis and 3 with stroke. We employed a scalar based vector field approximation method which was successful in identifying young healthy subjects' ankle impedance. It enabled clear interpretation of spatial ankle impedance structure and intermuscular feedback at the ankle for both affected and unaffected legs. Measured impedance of two patients was comparable to healthy young subjects, while the other two patients had significantly different static ankle impedance properties.

Original languageEnglish (US)
Pages (from-to)8523-8526
Number of pages4
JournalConference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference
Volume2011
StatePublished - 2011
Externally publishedYes

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Feasibility Studies
Electric Impedance
Ankle
Multiple Sclerosis
Stroke
Robots
Feedback
Healthy Volunteers
Nervous System Diseases
Lower Extremity
Leg

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Signal Processing
  • Biomedical Engineering
  • Health Informatics

Cite this

Static ankle impedance in stroke and multiple sclerosis : a feasibility study. / Lee, Hyunglae; Patterson, Tara; Ahn, Jooeun; Klenk, Daniel; Lo, Albert; Krebs, Hermano Igo; Hogan, Neville.

In: Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, Vol. 2011, 2011, p. 8523-8526.

Research output: Contribution to journalArticle

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