Abstract

AbstractShock Wave Therapy (SWT) meets all the requirements for the ideal non-invasive scar treatment. It is safe, well tolerated by patients, cost-effective, easy to apply, has low complication rates, and can be used in an outpatient setting. The overall effect of SWT is an improvement of tissue homeostasis, accompanied by an improvement of the tissue self-healing abilities, and it seems to focus on inducing tissue regeneration and matrix remodeling in vivo by means of mechanotransduction.SWT has a beneficial effect on wound healing and is characterized by an upregulation of the angio-active factors as nitric oxide (NO) and vascular endothelial growth factor (VEGF) leading to induced angiogenesis. A downregulation of alpha-SMA expression, myofibroblast phenotype, TGF-β1 expression, fibronectin, and collagen type I are measured after SWT on scars, leading to improvement of several relevant scar parameters like height, pliability, vascularity, and pigmentation, and thus ameliorating function.For a full treatment outline, the energy flux density (EFD), the number of pulses, the pulse frequency, and the number and interval of treatments are the most relevant parameters. The EFD for soft tissue indications is typically in the range of 0.08–0.25 mJ/mm2, while scars and fibrosis are treated with an EFD ranging between 0.15 and 0.33 mJ/mm2. These settings seem to be ideal to induce the optimal cell responses for each indication.All the presented findings are fundamental knowledge for further investigation of SWT to reduce the fibrous component in regenerating and remodeling tissues. However, the full potential of SWT in wound healing and scar treatment needs further unraveling.

Highlights

  • To influence the evolution of an excessive scar toward seems to focus on inducing tissue regeneration and a normal scar, several physical treatments exist to manmatrix remodeling in vivo [9]

  • Propensity to retract and create contractures in joints, Sukubo et al (2015) described the beneficial effects splinting, taping, and posture stretching play a crucial of SWT on macrophage behavior

  • SWT does not actirole in the treatment

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Summary

55.2 SWT Dose Effect Relationship

For a full treatment outline, the energy flux density (EFD), the number of pulses, the pulse frequency, and the number and interval of treatments are the most relevant parameters [5]. Differences in these parameters can lead to varying outcomes, emphasizing the dose dependency of these mechanotransduction events [9]. SWT settings of 0.22 mJ/mm and 1000 pulses seem to be ideal for fibroblast viability and growth [20]. Fibroblast viability was influenced by the number of pulses. Each cell type seems to be responsive to SWT but probably with different optimal device settings and ranges of mechanical stimulation, developing different biochemical effects [8].

55.3.1 The Effects of SWT in Wound Healing
4–6 Hz 4–6 Hz
Findings
55.4 Conclusion
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