Evaluation of Anterior Quadratus Lumborum Block for Postoperative Analgesia in Hip Arthroscopy

Evaluation of Anterior Quadratus Lumborum Block for Postoperative Analgesia in Hip Arthroscopy: A Double-Blinded Randomized Controlled Trial

Hip arthroscopy is performed frequently and the postoperative course often involves moderate to severe pain. There remains no definitive perioperative pain regimen that has been proven to be effective and safe for this ambulatory procedure. Some institutions perform peripheral nerve blocks either preoperatively or postoperatively as a rescue block. All of these PNBs lead to quadriceps weakness which may impede earlier mobilization and physical therapy. While some case reports exist, there have not been any studies evaluating the QLB for hip arthroscopy patients. As previously mentioned, the technique is easy to perform, well-tolerated by patients, and avoids side effects such as hypotension, urinary retention, or the quadriceps weakness associated with lumbar plexus blockade.

Inclusion Criteria:

• Patients scheduled for hip arthroscopy
• Ability to follow study protocol
• English Speaking

Exclusion Criteria:

• Hepatic or renal insufficiency
• Younger than 18 years old and older than 80
• Allergy or intolerance to one of the study medications
• Chronic gabapentin/pregabalin use (regular use for longer than 3 months)
• Chronic opioid use (daily opioids use for longer than 3 months)
• Patients contraindicated to undergo a spinal anesthetic
• Non English Speakers