Erector Spinae Plane Block. A narrative review

The erector spinae plane (ESP) block is an interfascial block described in 2016 by Forero and collaborators, with wide clinical uses and benefits when it comes to analgesic control in different surgeries. This block consists of the application of local anesthetic (LA) in a deep plane over the transverse process, anterior to the erector spinae muscle in the anatomical site where dorsal and ventral branches of the spinal nerve roots are located. This review will cover its clinical uses according to different surgical models, the existing evidence and complications described to date.