Improving Extracorporeal Shock Wave Therapy With 904 or 905 NM Pulsed, High Power Laser Pretreatment

Christoph Schmitz

doi:10.20944/preprints202101.0138.v1

Preprint Hypothesis Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 6 January 2021 / Approved: 8 January 2021 / Online: 8 January 2021 (10:39:40 CET)

Extracorporeal shock wave therapy (ESWT) is a well investigated and widely used treatment modality for a number of musculoskeletal disorders. A limitation of ESWT is its potential painfulness at higher, clinically relevant energy flux density (EFD), which may limit its applicability and, thus, effectiveness. Various studies in the literature demonstrated that neither application of a higher number of extracorporeal shock waves with lower EFD nor use of local anesthesia may solve this problem. Based on the results of several other studies in the literature it is hypothesized here that in patients suffering from musculoskeletal disorders that can be treated with ESWT, pretreatment with a pulsed, high power laser with a wavelength of 904 or 905 nanometers (hereafter: "laser pretreatment") does not only allow to apply higher EFDs in subsequent ESWT but actually results in faster and/or better treatment outcome than ESWT without laser pretreatment. Accordingly, it is hypothesized here that combining ESWT with laser pretreatment leads to synergistic effects and, thus, is superior to either treatment modality alone. Confirming this hypothesis in preclinical and clinical research may raise significance and increase the use of ESWT in physical and rehabilitation medicine, with immediate benefit for patients.

extracorporeal shock wave therapy; ESWT, laser therapy; musculoskeletal system, rehabilitation

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Improving Extracorporeal Shock Wave Therapy With 904 or 905 NM Pulsed, High Power Laser Pretreatment

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