RESUMO
The present study aimed to compare the clinical effects of image-guided versus blind steroid injection to treat shoulder pain, which is always debatable. An electronic search of credible databases was conducted for randomized controlled trials (RCTs) comparing image-guided versus blind steroid injections. The continuous data were pooled as mean difference (MD) or standardized mean difference (SMD), and dichotomous data were grouped as odds ratio (OR) with 95% confidence interval (CI). Sensitivity analysis and leave-one-out analysis were performed. The meta-analysis of 20 RCTs comprising 1136 patients favored image-guided injection based on the MD of the visual analog score (VAS) and shoulder function scores, measured between six weeks follow-up and baseline (MD=0.63, 95% CI [0.13, 1.12], p=0.01 and SMD=0.35, 95% CI [0.05, 0.65], p=0.02, respectively). Meta-analysis did not favor either group regarding the shoulder disability scores or side effects (MD=-2.18, 95% CI [-12.19, 7.83], p=0.67, and OR=0.40, 95% CI [0.14, 1.15], p=0.09, respectively). The image-guided approach was associated with significant improvement in pain and shoulder functionality. However, no significant difference was observed between the two approaches in terms of disability scores and side effects.
