Erratum

During production of the original article [1], an oversight occurred which resulted in the omission of the Figures files from the published item. The original article has now been updated to include Figs. 1, 2, 3, 4, 5, 6, 7 and 8, as they appear below.

Fig. 1
figure 1

Flow diagram for literature search and identifications of articles for review

Fig. 2
figure 2

Risk of bias (a) graph and (b) summary: review authors’ judgements about each risk of bias item

Fig. 3
figure 3

Forest plot of the standard pair-wise meta-analysis for clinical response of local corticosteroid injections for carpal tunnel syndrome. Abbreviations: OR = odds ratio, CI= confidence interval, DI = distal approach corticosteroid injection, PI = proximal approach corticosteroid injection, Ulnar-I = ultrasound-guided in-plane approach

Fig. 4
figure 4

Forest plot of the standard pair-wise meta-analysis for change in symptom severity scale of local corticosteroid injections for carpal tunnel syndrome. Abbreviations: WMD = weighted mean difference, CI= confidence interval, PI = proximal approach corticosteroid injection, Ulnar-I = ultrasound-guided in-plane injection, Ulnar-O = ultrasound-guided out-plane injection

Fig. 5
figure 5

Forest plot of the standard pair-wise meta-analysis for change in functional status scale of local corticosteroid injections for carpal tunnel syndrome. Abbreviations: WMD = weighted mean difference, CI= confidence interval, PI = proximal approach corticosteroid injection, Ulnar-I = ultrasound-guided in-plane injection, Ulnar-O = ultrasound-guided out-plane injection

Fig. 6
figure 6

Network plots of the treatments for (a) clinical response, (b) change in symptom severity scale (c) change in functional status scale

Fig. 7
figure 7

Ranking of treatment strategies based on probability of their effects on (a) clinical response (b) change in symptom severity scale (c) change in functional status scale

Fig. 8
figure 8

Comparison-adjusted funnel plots for (a) clinical response (b) change in symptom severity scale (c) change in functional status scale