Effect of pericapsular nerve group block with different concentrations and volumes of Ropivacaine on functional recovery in total hip arthroplasty

Experts aimed to conduct a prospective randomized trial to test whether reducing the volume or concentration of Ropivacaine was better for less motor block after PENG block. Findings showed that a higher incidence of motor blockade was observed when 20 mL of 0.5% Ropivacaine was administered, which was mainly caused by excessive volume. Therefore, we recommend performing PENG block with 10 mL 0.5% Ropivacaine.