Figure 1

Flow diagram of the results of the study selection procedure, which is in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. OA, osteoarthritis; RCT, randomized controlled trial.
Flow diagram of the results of the study selection procedure, which is in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. OA, osteoarthritis; RCT, randomized controlled trial.