NDLI: A portable intelligent stretching device for treating spasticity and contracture with outcome evaluation

Content Provider	IEEE Xplore Digital Library
Author	Li-Qun Zhang Chung, S.G. Lin, A.F. van Rey, E.M. Zhiqiang Bai Grant, T.H. Roth, E.J.
Copyright Year	2002
Description	Author affiliation: Rehabilitation Inst. of Chicago, IL, USA (Li-Qun Zhang; Chung, S.G.; Lin, A.F.; van Rey, E.M.; Zhiqiang Bai)
Abstract	A portable stretching device with intelligent control was developed to treat the spastic/contractured ankle of neurologically impaired patients and evaluate the outcome. The device stretched the ankle throughout the range of motion (ROM) to extreme dorsiflexion and plantar flexion until a specified peak resistance torque was reached with the stretching velocity controlled based on the resistance torque. Stretching velocity was adjusted constantly. It was slow at the joint extreme positions, making it possible to reach a larger ROM safely, and it was fast in the middle ROM so the majority of the treatment was spent in stretching the problematic extreme ROM. The ankle was held at the extreme position for a period of time to let stress relaxation occur before it was rotated back to the other extreme position. Furthermore, the device evaluated treatment outcome quantitatively in multiple aspects, including active and passive ROM, joint stiffness and viscous damping, and reflex excitability. Combined with ultrasonography, the device was used to evaluate changes in mechanical properties of the Achilles tendon-aponeurosis induced by the stretching. The intelligent stretching reduced spasticity and contracture, including increases passive and active ROMs, decreases in elastic stiffness and viscous damping, and increase in muscle force-generating capacity.
Starting Page	2453
Ending Page	2454
File Size	271089
Page Count	2
File Format	PDF
ISBN	0780376129
ISSN	1094687X
DOI	10.1109/IEMBS.2002.1053371
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Read only memory Damping Intelligent control Medical treatment Motion control Torque control Velocity control Stress Ultrasonography Mechanical factors
Content Type	Text
Resource Type	Article

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