RESEARCH
Pericapsular Nerve Group (PENG) Block for Hip Surgery: A Systematic Review and Meta-Analysis of Randomized Controlled Trials .
Pericapsular nerve group (PENG) block is an emerging regional anesthesia technique for hip surgery, designed to achieve effective sensory blockade while preserving motor function. Across nine randomized trials, protocols varied widely—from timing and dosing to the choice of control techniques—yet a few consistent themes emerged. The clearest benefit was a reduced risk of nausea and vomiting after surgery, suggesting a favourable safety profile. Pain scores, opioid use, and hospital stay, however, were largely similar between PENG block and other strategies. Narrative findings indicate that PENG may better preserve motor function than alternatives like fascia iliaca or femoral nerve blocks, but small sample sizes and low-quality evidence mean uncertainty remains. More robust RCTs are still needed to clarify its true clinical value.
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