Effects of Peripheral Electromagnetic Fields on Spasticity: A Systematic Review

Abstract

Electromagnetic fields are emerging as a therapeutic option for patients with spasticity. They have been applied at brain or peripheral level. The effects of electromagnetic fields applied to the brain have been extensively studied for years in spasticity, but not so at the peripheral level. Therefore, the purpose of our work is to analyze the effects of electromagnetic fields, applied peripherally to spasticity. A systematic review was conducted resulting in 10 clinical trials. The frequency ranged from 1 Hz to 150 Hz, with 25 Hz being the most commonly used and the intensity it was gradually increased but there was low homogeneity in how it was increased. Positive results on spasticity were found in 80% of the studies: improvements in stretch reflex threshold, self questionnaire about difficulties related to spasticity, clinical spasticity score, performance scale, Ashworth scale, spastic tone, Hmax/Mmax Ratio and active and passive dorsal flexion. However, results must be taken with caution due to the large heterogeneity and the small number of articles. In future studies, it would be interesting to agree on the parameters to be used, as well as the way of assessing spasticity, to be more objective in the study of their effectiveness.

Neurorehabilitation in Multiple Sclerosis—A Review of Present Approaches and Future Considerations

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Quantitative Analysis of the Multicomponent and Spectrum–Effect Correlation of the Antispasmodic Activity of Shaoyao-Gancao Decoction

“…A more general defnition of spasticity is disordered sensory-motor control, resulting from UMN lesion, presenting intermittent or sustained involuntary activation of muscles [4]. Tis complex phenomenon of extremely variable clinical expression, which may cause diferent motor dysfunctions, has been observed in many patients with spinal cord injury, cerebral palsy, multiple sclerosis, and acquired brain injury, which directly impact the quality of life [5]. Presently, the conventional drugs used in the treatment of spasm include baclofen, tizanidine, and dantrolene, amongst others.…”