Abstract:Objective: To investigate the clinical efficacy of different pressure extracorporeal shock waves in the treatment of lateral epicondylitis. Method: A total of 90 patients with Lateral epicondylitis who were admitted to the Pain Department of Heze Municipal Hospital from March 2017 to March 2018 were enrolled. According to the difference of treatment pressure,the patients were divided into three groups: Group I, Group II, and Group III ,and each group include 30 cases. The corresponding pressure is 1bar, 2bar, 3 bar, individually. All three groups were treated once a week, and 5 consecutive treatments made a course of a treatment.NRS pain scores and treatment-related adverse events were compared before treatment, 1 month, 3 months, and 6 months after the last treatment. Results: The NRS scores at different time points after treatment in the three groups were significantly lower than those before treatment (p<0.05). After 6 months of treatment, the NRS scores in Group II and III were significantly lower than those in Group I (p<0.05);however, there was no significant difference in NRS scores between Group II and Group III (p>0.05); the excellent rate of Group II and Group III was greater than in Group I (p<0.05); patients from Group III suffered more pain after treatment than Group I and Group II (p<0.05). Conclusion: The effective rate of treatment in 2 bar and 3 bar pressure was higher than in 1 bar pressure. The incidence of reactive pain was higher in the 3 bar treatment group. The extracorporeal shock wave with a pressure of 2 bar is relatively effective in treating Lateral epicondylitis with less adverse reactions.