《Chinese Journal of Rehabilitation Theory and Practice》 ›› 2022, Vol. 28 ›› Issue (5): 515-519.doi: 10.3969/j.issn.1006-9771.2022.05.004

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Effects of manual digitorum sensory stimulation on spasticity of fingers for stroke patients: a surface electromyography study

TIAN Yaxing1,HONG Yongfeng1(),KAN Xiuli1,SHEN Xianshan1,MAO Jing1,JIANG Yan1,HE Ziyan1,WU Yu1,HU Wei2,SUN Xiaoning2,HU Shunyin2   

  1. 1. Department of Rehabilitation Medicine, the Second Hospital of Anhui Medical University, Hefei, Anhui 230601, China
    2. Hefei Anhua Trauma Rehabilitation Hospital, Hefei, Anhui 230601, China
  • Received:2021-09-15 Revised:2022-02-07 Published:2022-05-25 Online:2022-06-10
  • Contact: HONG Yongfeng E-mail:334117710@163.com
  • Supported by:
    Anhui Medical University Clinical Science Foundation(2020xkj196)

Abstract:

Objective To investigate the changes of surface electromyography (sEMG) of the flexors and extensors of the affected fingers after manual digitorum sensory stimulation (MDSS) in the hemiplegic patients after stroke. Methods From April to August, 2020, 50 stroke patients in Department of Rehabilitation Medicine, the Second Hospital of Anhui Medical University accepted MDSS on the nail beds and the third knuckles of affected fingers, until the fingers extended actively. The tension of affected flexor pollicis brevis, flexor digitorum superficialis and extensor digitorum were assessed with modified Ashworth Scale (MAS) before and immediately after stimulation; while the root mean square (RMS) of sEMG of bilateral flexor pollicis brevis, flexor digitorum superficialis and extensor digitorum were recorded. Results The MAS score of all the muscles decreased after stimulation (|Z| > 2.699, P < 0.01), while the RMS of affected extensor digitorum increased (t = -2.069, P < 0.05). Compared with the unaffected ones, RMS of affected flexor pollicis brevis and extensor digitorum decreased before and after stimulation (t > 2.450, P < 0.05). Conclusion MDSS may immediately relieve the spasm of flexors of hemiplegic fingers after stroke, which associates with the promoting muscle strength of the extensors.

Key words: stroke, hemiplegia, manual digitorum sensory stimulation, surface electromyography, muscle strength, spasticity

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