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Pericapsular nerve group (PENG) block for hip arthroscopy: a randomized, double-blinded, placebo-controlled trial
Peter E Amato1, John R Coleman2, Tomasz P Dobrzanski1
1Anesthesiology, University of Virginia Health System, Charlottesville, Virginia, USA.
Regional Anesthesia and Pain Medicine
|August 23, 2022
Summary
A pericapsular nerve group (PENG) block did not significantly improve pain relief after arthroscopic hip surgery compared to a sham block. This study found no difference in pain scores or other outcomes between the PENG block and sham groups.
Area of Science:
- Anesthesiology
- Orthopedic Surgery
- Pain Management
Background:
- Arthroscopic hip surgery often results in significant postoperative pain.
- Femoral nerve blocks offer analgesia but cause quadriceps weakness.
- The pericapsular nerve group (PENG) block is a potential alternative for pain relief with preserved muscle function.
Purpose of the Study:
- To evaluate if a preoperative PENG block provides superior postoperative analgesia compared to a sham block in patients undergoing arthroscopic hip surgery.
Main Methods:
- A randomized controlled trial comparing ultrasound-guided PENG block (n=34) with a sham injection (n=34) prior to general anesthesia.
- The primary outcome was the worst pain score within 30 minutes of anesthesia emergence.
- Secondary outcomes included opioid consumption, patient satisfaction, and adverse events.
Main Results:
- No statistically significant difference in the primary outcome (pain scores) between the PENG block and sham groups (mean difference -0.79, p=0.17).
- No significant differences were observed in any of the secondary outcomes between the two groups.
Conclusions:
- A preoperative PENG block did not demonstrate improved analgesia following arthroscopic hip surgery in this study.
- Further research may be needed to explore alternative nerve block techniques or patient populations.
