Analgesic Effectiveness of PENG Block in Programmed Hip Arthroplasty Surgery

A recent study has revealed a region of pericapsular terminal branches of the femoral nerve and the obturator nerve accessible to ultrasound-guided regional anaesthesia. This technique, also called the PENG block, has recently been described with a substantial benefit on pain at rest and induced by mobilization in cases series of patients undergoing hip fracture surgery. To investigators knowledge, no randomized data concerning the analgesic efficacy of the PENG block has been published in the setting of elective total hip arthroplasty.

The PENG block would allow a significant analgesic contribution when added to intra- and peri-articular infiltration of local anaesthetics while being well tolerated with few undesirable effects. Moreover, the PENG block could spare the motor function of the quadriceps and adductor muscles allowing enhanced recovery after surgery

Inclusion criteria

• Scheduled for total hip arthroplasty surgery under general anaesthesia
• Affiliated of a social security scheme
• Having signed the written informed consent

Exclusion criteria

• Total hip arthroplasty revision surgery
• Refusal of the patient to participate
• Existence of major spontaneous or acquired haemostasis disorders
• Infection at the puncture site
• Allergy to local anaesthetics
• Pregnancy or breast-feeding
• Patients under the protection of adults (guardianship, curatorship or protection of justice)
• Patients whose cognitive state does not allow assessment by the scales used.