Continuous erector spinae plane block at the lower lumbar level in a lower extremity complex regional pain syndrome patient

A 20-gauge epidural catheter was inserted through a Tuohy needle, and a total of 20 ml of a mixture of 5 ml of 2% lidocaine and 15 ml of contrast medium was injected through the catheter, and the spread of the injectate was observed through fluoroscopic imaging (Fig. 1C–E). Anatomically, the ESM is a structure that forms the paraspinal column, is surrounded by fascia, and extends to the lumbosacral level [5]. [...]just as injected local anesthetics (LA) spread to multiple thoracic and even lumbar levels during ESP blocks at lower thoracic levels, it is conceivable that LA may spread to lumbosacral levels during ESP block at lower lumbar levels. [...]ESP block at the lower lumbar level for the control of lower extremity pain was easily and safely performed in a CRPS patient who underwent SCS, and the results were satisfactory.