Pericapsular Nerve Group Block for Total Hip Arthroplasty

The aim of the study was to evaluate the efficacy of the PENG block for intra and postoperative pain control in total hip arthroplasty. it was a monocentric, randomized, controlled and double blind study. Patients scheduled for primary THA with lateral approach under general anesthesia. Premedication with IV midazolam 1 to 2 mg on arrival to operating theatre. general anesthesia was conducted using fentanyl, propofol and cisatracurium for induction and isoflurane for maintanance patients were randomized using a random table in two groups: * PENG Block group (PG) who received 2 mg.kg-1Ropivacaine in 40 ml of saline. * Placebo group (SG) who received 40 ml of saline. Postoperative analgesia started before extubation of the patient, with: * IV paracetamol 1g/6h in Day1 and oral paracetamol 1g/8h for 6 days. * non steroidal anti inflammatory drugs with IM piroxicam 20 mg on day one (at the end of surgery) and oral diclofenac 50 mg/12h for 3 days. * Morphine PCA for day 1 (24 H) and oral tramadol 50 mg/12h from day 2 to day 6.