Isometric Force Pillow: Using Air Pressure to Quantify Involuntary Finger Flexion in the Presence of Hypertonia

Caitlyn E. Seim; Chuzhang Han; Alexis J. Lowber; Claire Brooks; Marie Payne; Maarten G. Lansberg; Kara E. Flavin; Julius P.A. Dewald; Allison M. Okamura

doi:10.1007/978-3-030-70316-5_133

Isometric Force Pillow: Using Air Pressure to Quantify Involuntary Finger Flexion in the Presence of Hypertonia

Caitlyn E. Seim^*, Chuzhang Han, Alexis J. Lowber, Claire Brooks, Marie Payne, Maarten G. Lansberg, Kara E. Flavin, Julius P.A. Dewald, Allison M. Okamura

^*Corresponding author for this work

Physical Therapy and Human Movement Sciences

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

Survivors of central nervous system injury commonly present with spastic hypertonia. The affected muscles are hyperexcitable and can display involuntary static muscle tone and an exaggerated stretch reflex. These symptoms affect posture and disrupt activities of daily living. Symptoms are typically measured using subjective manual tests such as the Modified Ashworth Scale; however, more quantitative measures are necessary to evaluate potential treatments. The hands are one of the most common targets for intervention, but few investigators attempt to quantify symptoms of spastic hypertonia affecting the fingers. We present the isometric force pillow (IFP) to quantify involuntary grip force. This lightweight, computerized tool provides a holistic measure of finger flexion force and can be used in various orientations for clinical testing and to measure the impact of assistive devices.

Original language	English (US)
Title of host publication	Biosystems and Biorobotics
Publisher	Springer Science and Business Media Deutschland GmbH
Pages	835-840
Number of pages	6
DOIs	https://doi.org/10.1007/978-3-030-70316-5_133
State	Published - 2022

Publication series

Name	Biosystems and Biorobotics
Volume	28
ISSN (Print)	2195-3562
ISSN (Electronic)	2195-3570

Funding

Acknowledgements This research was supported, in part, by the Stanford Wu Tsai Neurosciences Institute Neuroscience: Translate Program and the Eunice Kennedy Shriver National Institute of Child Health and Human Development of the National Institutes of Health (NIH) under Award Number F32HD100104.

Keywords

Hypertonia
Measurement
Quantify
Spasticity
Stroke
Tool

ASJC Scopus subject areas

Biomedical Engineering
Mechanical Engineering
Artificial Intelligence

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1007/978-3-030-70316-5_133

Cite this

Seim, C. E., Han, C., Lowber, A. J., Brooks, C., Payne, M., Lansberg, M. G., Flavin, K. E., Dewald, J. P. A., & Okamura, A. M. (2022). Isometric Force Pillow: Using Air Pressure to Quantify Involuntary Finger Flexion in the Presence of Hypertonia. In Biosystems and Biorobotics (pp. 835-840). (Biosystems and Biorobotics; Vol. 28). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-3-030-70316-5_133

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title = "Isometric Force Pillow: Using Air Pressure to Quantify Involuntary Finger Flexion in the Presence of Hypertonia",

abstract = "Survivors of central nervous system injury commonly present with spastic hypertonia. The affected muscles are hyperexcitable and can display involuntary static muscle tone and an exaggerated stretch reflex. These symptoms affect posture and disrupt activities of daily living. Symptoms are typically measured using subjective manual tests such as the Modified Ashworth Scale; however, more quantitative measures are necessary to evaluate potential treatments. The hands are one of the most common targets for intervention, but few investigators attempt to quantify symptoms of spastic hypertonia affecting the fingers. We present the isometric force pillow (IFP) to quantify involuntary grip force. This lightweight, computerized tool provides a holistic measure of finger flexion force and can be used in various orientations for clinical testing and to measure the impact of assistive devices.",

keywords = "Hypertonia, Measurement, Quantify, Spasticity, Stroke, Tool",

author = "Seim, {Caitlyn E.} and Chuzhang Han and Lowber, {Alexis J.} and Claire Brooks and Marie Payne and Lansberg, {Maarten G.} and Flavin, {Kara E.} and Dewald, {Julius P.A.} and Okamura, {Allison M.}",

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doi = "10.1007/978-3-030-70316-5_133",

language = "English (US)",

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Seim, CE, Han, C, Lowber, AJ, Brooks, C, Payne, M, Lansberg, MG, Flavin, KE, Dewald, JPA & Okamura, AM 2022, Isometric Force Pillow: Using Air Pressure to Quantify Involuntary Finger Flexion in the Presence of Hypertonia. in Biosystems and Biorobotics. Biosystems and Biorobotics, vol. 28, Springer Science and Business Media Deutschland GmbH, pp. 835-840. https://doi.org/10.1007/978-3-030-70316-5_133

Isometric Force Pillow: Using Air Pressure to Quantify Involuntary Finger Flexion in the Presence of Hypertonia. / Seim, Caitlyn E.; Han, Chuzhang; Lowber, Alexis J. et al.
Biosystems and Biorobotics. Springer Science and Business Media Deutschland GmbH, 2022. p. 835-840 (Biosystems and Biorobotics; Vol. 28).

Research output: Chapter in Book/Report/Conference proceeding › Chapter

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AU - Seim, Caitlyn E.

AU - Han, Chuzhang

AU - Lowber, Alexis J.

AU - Brooks, Claire

AU - Payne, Marie

AU - Lansberg, Maarten G.

AU - Flavin, Kara E.

AU - Dewald, Julius P.A.

AU - Okamura, Allison M.

PY - 2022

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KW - Stroke

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Isometric Force Pillow: Using Air Pressure to Quantify Involuntary Finger Flexion in the Presence of Hypertonia

Abstract

Publication series

Funding

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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