Analgesic efficacy of selective tibial nerve block versus partial local infiltration analgesia for posterior pain after total knee arthroplasty: a randomized, controlled, triple-blinded trial
Authors' conclusion
A tibial nerve block does not provide superior analgesia when compared to infiltration. However, a tibial nerve block might be associated with a slower increase in morphine consumption over time.
Study context
- Population
- Patients scheduled for total knee arthroplasty under spinal anesthesia with an adductor canal block
- Participants
- 60 patients
- Comparison
- Tibial nerve block vs Infiltration
- Primary endpoint
- IV morphine consumption
- Follow-up
- 24 h
Methodological detailstriple-blinded, sham injections
- Triple-blinded
- Sham injections
Primary result
As reported in the abstract
Cumulative IV morphine consumption
P = 0.20
Secondary outcomes
Morphine consumption over time (longitudinal mixed-effects model) · up to 48 h
- Significant group × time interaction in favor of the tibial nerve block
- Interaction p = 0.015
Pain scores at rest and on movement, functional outcomes · up to 48 h
- No significant differences between groups
Original publication
Analgesic efficacy of selective tibial nerve block versus partial local infiltration analgesia for posterior pain after total knee arthroplasty: a randomized, controlled, triple-blinded trial. Anaesth Crit Care Pain Med. Published 6 April 2023. doi:10.
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