“…In addition, several small case series also have reported outcomes with DRG stimulation, including for complex regional pain syndrome (CRPS) of the lower limbs ( N = 11) , CRPS of the knee ( N = 1) , and groin pain ( N = 3 and N = 29) . In these case series, the trial‐to‐permanent ratio was between 73% and 86% , and average pain relief ranged between 62% and 100% with follow‐ups of a year or less .…”