Erector spinae plane block for postoperative analgesia after hip surgery: a systematic review and meta-analysis of randomized controlled trials.
BACKGROUND Erector spinae plane block (ESPB) has been evaluated for postoperative analgesia after hip surgery, but its comparative value relative to established regional techniques remains uncertain. This systematic review and meta-analysis of randomized controlled trials (RCTs) assessed postoperative pain and opioid u...