Fig. 4From: Efficacy and safety of radiofrequency treatment for improving knee pain and function in knee osteoarthritis: a meta-analysis of randomized controlled trialsForest plots for the assessment of pain scores between the radiofrequency group and control group. At A 1–2 weeks, B 4 weeks, C 12 weeks, and D 24 weeks. SD, standard deviation; CI, confidence intervalBack to article page