Quadratus Lumborum Block for Total Hip Arthroplasty

Exclusion Criteria

• •patients age \< 18,
• •documented allergy to local anesthetic
• •presence of peripheral neuropathy
• •patients with current long term opioid use defined as receiving an opioid on most days in a 90 day period
• •patients with a contraindication to spinal and regional anesthesia such as coagulopathy or infection at the site of the regional technique.