• J Arthroplasty · Dec 2012

    Randomized Controlled Trial

    Combined femoral and sciatic nerve block vs combined femoral and periarticular infiltration in total knee arthroplasty: a randomized controlled trial.

    • Devendra Mahadevan, Richard P Walter, Gary Minto, Thomas C Gale, Christoph J McAllen, and Matthew Oldman.
    • Plymouth Hospitals NHS Trust, Derriford Hospital, Plymouth PL6 8DH, United Kingdom.
    • J Arthroplasty. 2012 Dec 1;27(10):1806-11.

    AbstractThis study tests the null hypothesis that there is no difference between sciatic nerve block (SNB) and periarticular anesthetic infiltration (PI) as adjuncts to femoral nerve blockade (FNB) in total knee arthroplasty in terms of postoperative opioid requirements. Fifty-two patients undergoing total knee arthroplasty were randomized to receive either (a) combined FNB-SNB or (b) combined FNB-PI. Average morphine consumption in the first 24 (20 vs 23 mg) and 48 hours (26 vs 33 mg) showed no significant difference. Visual Analogue Scale scores, knee flexion (60° vs 67.5°) and extension lag (0° vs 5°) were comparable. Anesthetic time, surgical time, and length of hospital stay (5.5 vs 6 days) were similar. This study showed no significant difference between the 2 groups. The PI offers a practical and potentially safer alternative to SNB.Copyright © 2012 Elsevier Inc. All rights reserved.

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