Effects of popliteal plexus block after total knee arthroplasty: a randomized clinical trial
Authors' conclusion
Adding a popliteal plexus block to a femoral triangle block resulted in a statistically significant reduction of 24-hour postoperative opioid consumption after total knee arthroplasty. However, no differences were found in pain scores. Popliteal plexus block did not impair the lower leg muscles.
Study context
- Population
- Patients undergoing total knee arthroplasty, IV oxycodone via PCA3 equally sized groups
- Participants
- 165 patients
- Comparison
- Popliteal plexus block + femoral triangle block vs femoral triangle block alone vs adductor canal block
- Primary endpoint
- Postoperative opioid (IV oxycodone) consumption
- Follow-up
- 24 hours
Methodological detailspatient- and assessor-blinded, three parallel groups
- Patient- and assessor-blinded
- Three parallel groups
Primary result
As reported in the abstract
24-hour postoperative IV oxycodone consumption
Median difference, mg (95% CI)P value
PPB+FTB vs FTB
−4(−7.4 to −1.0)
P < 0.01PPB+FTB vs ACB
−6(−8.3 to −1.3)
P = 0.01Secondary outcomes
Events
| Outcome | PPB+FTB | FTB | ACB |
|---|---|---|---|
| 24-hour opioid-free postoperative care (post hoc) · post hoc analysis | 12 | 2 | 6 |
Pain scores, mobilization, changes in preoperative muscle strength
- No differences between groups
Original publication
Effects of popliteal plexus block after total knee arthroplasty: a randomized clinical trial. Reg Anesth Pain Med. Published 16 July 2024. doi:10.
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