Complete motorsparing protocol (CMP) has been developed to try to minimize the motor nerve block that is created when using Facia iliaca nerve block. The blocks performed in the (CMP) are the cluneal nerve block, Pericapsular nerve group block and lateral femoral cutaneous block. On the clinical trial, the investigators will randomize the participants that meet criteria to CMP or Fascia iliaca Block and compare the amount of opioid needed post op during 24 hours and their pain scores.

Inclusion Criteria:

• Patients ≥ 18 years old
• Patients undergoing total hip arthroplasty posterior approach.
• Patients willing to participate and sign informed consent

Exclusion Criteria:

• Severe COPD/other contraindication to general anesthesia that spinal would be more suitable.
• Patient with a weight of less than 41 kg
• Dementia, not alert or Oriented to person, place, or time
• Chronic pain patient with daily opioid use at home.
• Patient with allergy to local anesthetics
• Patient refusal
• Total hip arthroplasty revision
• Concomitant pain in different area from operative site.
• Pregnancy
• Patient with active infection on the injection sites for the blocks
• Patients unable or willing to understand or comply with the study protocol