PNF and Movement 2020; 18(1): 117-126
Effect of Extracorporeal Shock-wave Therapy on Pain, Grip Strength, and Upper-extremity Function in Patients with Lateral Epicondylitis
Min-Jeong Song, P.T., M.S⋅Tae-Woo Kang, P.T., Ph.D1⋅Beom-Ryong Kim, P.T., M.S2†
Department of Physical Therapy, Wonkwang University Hospital
1Department of Physical Therapy, College of Health and Welfare, Woosuk University
2Department of Physical Therapy, Design Hospital
Correspondence to: Beom-Ryong Kim (
Received: December 26, 2019; Revised: January 25, 2020; Accepted: February 14, 2020; Published online: April 30, 2020.
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Purpose: The purpose of this study was to investigate the effects of extracorporeal shock-wave therapy (ESWT) on pain, grip strength, and upper-extremity function in patients diagnosed with lateral epicondylitis and to provide an effective intervention method for lateral epicondylitis.
Methods: Twenty patients with lateral epicondylitis were randomly assigned to the ESWT group (n = 10) and the stretching exercise group (n = 10). Interventions in both groups were performed six times twice a week for three weeks. The visible analog scale (VAS) was used to measure pain change. A dynamometer was used to measure grip strength (GS). Patient-rated tennis elbow evaluation (PRTEE) was used to measure the upper-extremity function.
Results: There were significant differences in pain, grip strength, and upper-extremity function in both groups before and after intervention (p < 0.05). There were also significant differences in pain, grip strength, and upper-extremity function between the groups after intervention (p < 0.05).
Conclusion: This study showed very positive improvement in pain, grip strength, and upper-extremity function after ESWT in patients with lateral epicondylitis. Therefore, ESWT can be recommended for patients with lateral epicondylitis.
Keywords: Extracorporeal shock-wave therapy, Hand strength, Tennis elbow, Upper extremity

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