Spasticity is a common abnormal muscle behavior associated with neurological disorders and is characterized by speed-dependent increased tone in the affected muscle when induced by passive movement . During the passive stretch of the muscle, additional unique clinical signs that accompany spasticity are (a) sudden increase in muscle tone at a certain joint position (catch angle), called the “catch”, (b) after the “catch”, a quick drop of muscle resistance, called the “release”, where (a) and (b) together are usually referred to as the “catch-release” behavior, and (c) limited range of motion (ROM) [1,2]. With the evolution of spasticity, these symptoms will worsen.
Revised Design of a Passive Hydraulic Training Simulator of Biceps Spasticity
Pei, Y, Ewoldt, RH, Zallek, CM, & Hsiao-Wecksler, ET. "Revised Design of a Passive Hydraulic Training Simulator of Biceps Spasticity." Proceedings of the 2018 Design of Medical Devices Conference. 2018 Design of Medical Devices Conference. Minneapolis, Minnesota, USA. April 9–12, 2018. V001T11A007. ASME. https://doi.org/10.1115/DMD2018-6881
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