Impact of ultrasound-guided erector spinae plane block on outcomes after lumbar spinal fusion: a retrospective propensity score matched study of 242 patients.

Erector spinae plane blocks were associated with clinically irrelevant reductions in 24-hour opioid consumption and no improvement in pain scores after lumbar fusion. The routine use of these blocks in the setting of a comprehensive care pathway for lumbar fusion may not be warranted.