Myofascial Pain Syndrome (MPS) in the upper trapezius muscle is a common and often debilitating condition characterized by the presence of trigger points and associated pain. This study aims to evaluate the effectiveness of Extracorporeal Shockwave Therapy (ESWT) as a treatment modality for MPS in the upper trapezius. A randomized controlled trial was conducted with participants diagnosed with MPS. Subjects were divided into two groups: the treatment group received ESWT, while the control group received a placebo treatment. Outcome measures included pain intensity, assessed using the Visual Analog Scale (VAS), and functional disability, measured by the Neck Disability Index (NDI). Results indicated a significant reduction in pain intensity and improvement in functional disability in the ESWT group compared to the control group. These findings suggest that ESWT is an effective therapeutic option for reducing pain and improving function in patients with MPS of the upper trapezius.

Extracorporeal Shockwave Therapy (ESWT), Myofascial Pain Syndrome (MPS), Upper Trapezius

Chow RT, Barnsley L. Systematic review of the literature of low-level laser therapy (LLLT) in the management of neck pain. Lasers Surg Med 2005;37:46-52.

Shah JP, Danoff JV, Desai MJ, Parikh S, Nakamura LY, Phillips TM, et al. Biochemicals associated with pain and inflammation are elevated in sites near to and remote from active myofascial trigger points. Arch Phys Med Rehabil 2008;89:16-23.

Shah JP, Gilliams EA. Uncovering the biochemical milieu of myofascial trigger points using in vivo microdialysis: An application of muscle pain concepts to myofascial pain syndrome. J Bodyw Mov Ther 2008;12:371-84.

Cerezo-Téllez E, Torres-Lacomba M, Mayoral-Del Moral O, Sánchez-Sánchez B, Dommerholt J, Gutiérrez-Ortega C. Prevalence of myofascial pain syndrome in chronic non- specific neck pain: A population-based cross-sectional descriptive study. Pain Med 2016;17:2369-77.

Bron C, Dommerholt JD. Etiology of myofascial trigger points. Curr Pain Headache Rep 2012;16:439-44.

International Society for Medical Shockwave Treatment. ESWT-Basic Physical Principals. Vienna, Austria: International Society for Medical Shockwave Treatment; 2016.

Moya D, Ramón S, Schaden W, Wang CJ, Guiloff L, Cheng JH. The role of extracorporeal shockwave treatment in musculoskeletal disorders. J Bone Joint Surg Am 2018;100:251-63.

Yoo JI, Oh MK, Chun SW, Lee SU, Lee CH. The effect of focused extracorporeal shock wave therapy on myofascial pain syndrome of trapezius: A systematic review and meta-analysis. Medicine (Baltimore) 2020;99:e19085.

Moher D, Liberati A, Tetzlaff J, Altman DG, PRISMA Group. Preferred reporting items for systematic reviews and meta- analyses: The PRISMA statement. BMJ 2009;338:b2535.

Riva JJ, Malik KM, Burnie SJ, Endicott AR, Busse JW. What is your research question? An introduction to the PICOT format for clinicians. J Can Chiropr Assoc 2012;56:167-71.

Ji HM, Kim HJ, Han SJ. Extracorporeal shock wave therapy in myofascial pain syndrome of upper trapezius. Ann Rehabil Med 2012;36:675-80.

Gür A, Koca I, Karagüllü H, Altindağ Ö, Madenci E, Tutoğlu A, et al. Comparison of the effectiveness of two different extracorporeal shock wave therapy regimens in the treatment of patients with myofascial pain syndrome. Arch Rheumatol 2014;29:186-93.

Yanga YJ, Leeb SJ, Choi M. Pressure pain threshold and visual analogue scale changes in the high and low energy extracorporeal shock wave. Phys Ther Rehabil Sci 2014;3:142-7.