The Current State of Knowledge on the Clinical and Methodological Aspects of Extracorporeal Shock Waves Therapy in the Management of Post-Stroke Spasticity-Overview of 20 Years of Experiences

Józef Opara, Jakub Taradaj, Karolina Walewicz, Joanna Rosińczuk, Robert Dymarek, Józef Opara, Jakub Taradaj, Karolina Walewicz, Joanna Rosińczuk, Robert Dymarek

Abstract

In many patients after stroke, spasticity develops over time, resulting in a decrease in the patient's independence, pain, worsening mood, and, consequently, lower quality of life. In the last ten years, a rich arsenal of physical agents to reduce muscle tone such as extracorporeal shock therapy (ESWT) wave has come through. The aim of this narrative review article is to present the current state of knowledge on the use of ESWT as a supplement to the comprehensive rehabilitation of people after stroke suffering from spasticity. The PubMed and PEDro databases were searched for papers published in English from January 2000 to December 2020, 22 of which met inclusion criteria for clinical studies related to post-stroke spasticity management with ESWT. A total of 22 studies including 468 post-stroke patients-11 reports with the upper limb (267 patients) and 10 reports within the lower limb (201 patients), as well as one report including both upper and lower limb. We focused our attention on clinical and methodological aspects. Therefore, we performed the assessment of enrolled studies in terms of methodological quality using the PEDro and level of evidence using the National Institute for Health and Clinical Excellence (NICE) guidelines. Furthermore, we indicated implications for clinical practice in using ESWT for post-stroke spasticity management. Moreover, we discussed a suggestion for future research directions. In conclusion, an ESWT effectively reduces muscle tone in people with spastic limb after stroke. Further, ESWT is safe and free of undesirable side effects. The mechanism of action of ESWT on muscles affected by spasticity is still unknown. To date, no standard parameters of ESWT in post-stroke spasticity regarding intensity, frequency, location, and the number of sessions has been established. Further research, meeting the highest standards, is needed to establish uniform muscle stimulation parameters using ESWT.

Keywords: muscle spasticity; narrative review; neurorehabilitation; physiotherapy; shock wave therapy; state of art; stroke.

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Flow diagram for selection process and identification of studies for inclusion.
Figure 2
Figure 2
An exemplary methodology of rSWT application for the upper limb muscles. (A,B), treatment session delivered to the elbow flexors; (C,D), treatment session delivered to the wrist flexors.
Figure 3
Figure 3
An exemplary methodology of fSWT application for the lower limb muscles. (A,B), treatment session delivered to the hip extensors; (C,D), treatment session delivered to the ankle plantar flexors.

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