23rd Annual Pain Medicine Meeting 2024

Analgesic efficacy of daily single-shot versus continuous adductor canal block after total knee arthroplasty - An open-label, randomized controlled trial

M. Jang, H. Kim, S. Yoo, S. Kwon, Y. Kim, J. Bae, Y. Kim, Y. Cho, J. Kim, Y. Lim

Background

•Total knee arthroplasty is frequently associated with postoperative pain.

•Continuous adductor canal blocks are widely used for postoperative analgesia.

•The high dislocation rate of nerve block catheters often leads to ineffective pain control.

Method

1.Patients who underwent total knee arthroplasty under spinal anesthesia (n=67) were randomized to receive daily single-shot (n=39) or continuous adductor canal block (n=37).

2.The primary outcome was the time-weighted average pain score at rest, assessed using the numeric rating scale, until the second postoperative day.

Discussion

•We administered single-shot ACBs daily in conjunction with a multimodal analgesic protocol unlike previous studies.

•We compared the analgesic effects of single-shot and continuous ACBs over a longer period by assessing pain between 24 and 48 h after the operation, which has received less attention.

Conclusion

•Both daily single-shot and continuous adductor canal block provided effective analgesia during the first 2 days after total knee arthroplasty in terms of the average pain score.

•Considering the high dislocation rate of nerve block catheters, reduction of catheter dislodgement may improve the analgesic effectiveness of continuous adductor canal blocks.

23rd Annual Pain Medicine Meeting 2024

ANALGESIC EFFICACY OF DAILY SINGLE SHOT VS. CONTINUOUS ADDUCTOR CANAL BLOCK AFTER KNEE ARTHROPLASTY: A RANDOMIZED CONTROLLED TRIAL

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