Study Comparing Regional Anesthetic Blocks and Periarticular Infiltration for the Management of Post-operative Pain After Direct Anterior Total Hip Arthroplasty

Prospective Randomized Study Comparing Regional Anesthetic Blocks and Periarticular Infiltration for the Management of Post-operative Pain After Direct Anterior Total Hip Replacement

To compare two methods of post-operative pain management in patients undergoing total hip arthroplasty. There is a perception that the periarticular injections may not be as effective in controlling post-operative pain.

Both methods are current standard of care. The investigators want to compare the outcomes of each when patients are randomized to one of the methods compared to the other method of post-operative pain control.

Inclusion Criteria:

• Subject scheduled for Direct Anterior unilateral total hip replacement
• Weight ≥ 50 and ≤125 kg
• Intact neurological exam
• Cognitively intact with ability to sign consent

Exclusion Criteria:

• Renal insufficiency with creatinine > 1.5 mg/dl
• Allergic to any of the following : Ropivacaine, Epinephrine, Ketorolac, Morphine sulfate, NSAIDs, Tylenol, Neurontin, Morphine, Oxycodone or Dilaudid.
• Subject taking regular narcotic medications prior to surgery (20mg/day Morphine equivalents for >7days)
• Subject with prior open hip surgery who received regional anesthesia or periarticular injection for post op pain management.
• Subject with contraindication for spinal anesthesia