Fig. 1. Effect of spinal cord stimulation on microcirculatory parameters in affected complex regional pain syndrome (CRPS) hands and contralateral clinically unaffected hands, presented as median percentage change from baseline and interquartile ranges. Rest flow (RF) and peak flow (PF) are measured with hands at heart level. The vasoconstriction index (VCI) expresses the heart level to dependency ratio of the rest flow. There are no significant differences from baseline or within groups.