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- Title
Changes in Motor Function Induced by Chronic Motor Cortex Stimulation in Post-Stroke Pain Patients.
- Authors
Yamamoto, Takamitsu; Katayama, Yoichi; Watanabe, Mitsuru; Sumi, Kohichiro; Obuchi, Toshiki; Kobayashi, Kazutaka; Oshima, Hideki; Fukaya, Chikashi
- Abstract
Background: In well-designed multicenter studies, the protocol of continuing motor cortex stimulation (MCS) temporarily for 3-6 weeks was employed with rehabilitation therapy, and these studies showed some recovery of motor weakness in post-stroke patients. Objectives: We aimed to clarify the effects of long-term MCS and the optimal stimulation conditions to improve motor weakness in post-stroke patients. Methods: We applied chronic MCS in 6 post-stroke pain patients with motor weakness. We then examined the correlation between the duration of daily MCS applied over 6 months and motor function assessed on the basis of the Fugl-Meyer Assessment (FMA) score of the patients. Results: In the 6 patients with motor weakness, the FMA score of the upper extremity increased in 4 patients who underwent daily MCS for less than 4 h. On the other hand, 2 patients who continued excessive MCS to control their complicating post-stroke pain showed decreased FMA scores and worsened motor function owing to their increased rigidity and/or spasticity. These 2 patients recovered their motor function after their daily MCS was restricted to less than 4 h. Conclusions: These findings indicate that MCS could be a new therapeutic approach to improving motor performance after stroke by attenuating rigidity and/or spasticity. However, it may be important to define the appropriate number of hours and conditions of daily MCS. Copyright © 2011 S. Karger AG, Basel
- Publication
Stereotactic & Functional Neurosurgery, 2011, Vol 89, Issue 6, p381
- ISSN
1011-6125
- Publication type
Article
- DOI
10.1159/000332060