Comparison of Pericapsular Nerve Group Block and Quadratus Lumborum Block

Adequate pain management following total hip arthroplasty (THA) is a key component for patient satisfaction and early ambulation. However, due to the complexity of the innervation of the hip joint, the most appropriate anaesthetic and analgesic technique for THA remains unclear. A femoral nerve block is commonly performed and well established but is associated with motor weakness. Recently, the pericapsular nerve group (PENG) block has been introduced as an effective choice which targets the articular branches of the hip. The quadratus lumborum block (QLB) is a relatively new regional block that has been reported to provide effective analgesia for THA.The main objective of this study is to compare the effectiveness of the ultrasound-guided PENG block technique compared to QLB block in terms of efficacy of pain control and the safety profile after total hip arthroplasty under spinal anesthesia.

Inclusion Criteria:Physical status according to American Society of Anesthesiologists (ASA ) I-IIIExclusion Criteria:Younger than 40 years old and older than 85Patients undergoing general anesthesiaAllergy or intolerance to one of the study medicationsInfection of the skin at the site of the needle puncture,Patients who do not accept the procedureHistory of bleeding diathesisASA IV,Chronic gabapentin/pregabalin,opioid useHepatic or renal insufficiencyPrevious operation on the same hipBMI >40