Adequate pain control after total hip arthroplasty is crucial for early ambulation and patient satisfaction. The pericapsular nerve group (PENG) block has been recently introduced a new technique for blockade of the articular branches of the femoral, obturator and accessory obturator nerves. PENG block provides sufficient analgesia but it is still the potential for quadriceps weakness that might delay ambulation. Periarticular injection has attached attention as an effective analgesic modality with a low prevalence of adverse effects. The investigators will compare ultrasound-guided PENG block with periarticular injection in patients undergoing total hip arthroplasty.

Inclusion Criteria:

1. Aged 19 years old or older
2. American Society of Anesthesiologists Physical Status 1-3
3. Scheduled for elective unilateral total hip arthroplasty

Exclusion Criteria:

1. Allergy or intolerance to any of the drugs used in the study
2. Hepatic or renal insufficiency
3. Opioid dependency
4. Coagulopathy
5. Pre-existing neurologic or anatomic deficits in the lower extremities
6. Severe psychiatric illness