The Effect of Manual Physical Therapy on Improvement in the Range of Motion of Frozen Shoulder Patients: A Meta-Analysis of Cases in South Korea

ABSTRACT

Purpose@#The main purpose of this meta-analysis was to identify the degree of effect size and variables for the impact of manual physical therapy on the improvement in the range of motion of frozen shoulder patients. @*Methods@#This study collected 8 studies published between 1st January 2010 and 31st December 2020. The analysis of the results verified 49 effect size data and the random effect model was chosen. @*Results@#First, the full case showed the largest mean effect size of 2.485 (p 0.737). The number of intervention periods showed 4 weeks 20 or more effect size of 2.782 (p > 0.294). Finally, the ‘Trim and Fill’ result confirmed that the calibration effect size was 1.471 (p < 0.001). @*Conclusion@#This study verified that manual physical therapy had a substantial effect on the improvement of the range of motion of patients with frozen shoulders and that the effects were dependent on the methods of outcomes.