Randomization, blinding and study intervention
anterior inferior iliac spine
A nurse not involved in the study used Excel to generate a random integer set of 1-41, odd number into group F and even number into group P. These random numbers were placed in sealed opaque envelopes, and the anesthesiologist experienced in performing pericapsular nerve group block conducted the trial intervention. Group P received ultrasound-guided PENG block with 20 mL of 0.375% ropivacaine) and Group F received intravenous flurbiprofen 50 mg. In this study, a resident anesthesiologist who was unaware of the randomization assignment collected the data. Another member of this group who was blinded to the other steps of this test performed statistical analysis and remained blinded throughout the entire process.Patients in the group P received the PENG block as described by Girón-Arango [Representative image and ultrasound scan of patient receiving PENG block. Notes: White arrow is ultrasound-guide tracing of puncture needle; * Iliopsoas tendon is marked. Abbreviations: PENG, pericapsular nerve group; AIIS, anterior inferior iliac spine; IPE, iliopubic eminence; FA, femoral artery; LA, local anestheticsAfter those with contraindications were excluded, both groups received analgesia (Ultrasound-guided PENG block or intravenous flurbiprofen) as soon as possible after admission. When the NRS scores≥ 4 at rest after analgesia, the patients recevied intramuscular 5 mg dezocine as rescue analgesia. Dezocine was used repeatedly, if required, with dosing intervals of no less than 6 hours.