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Updated: Jun 7, 2026

Spinal Sonography for Ultrasound-Guided Lumbar Neuraxial Anesthesia
Published on: January 31, 2025
[Continuous peripheral nerve block with a catheter placed under ultrasound guidance for analgesia after major
Fumiko Kono1, Shinichi Sakura, Kaoru Hara
1Department of Anesthesiology, Shimane University School of Medicine, Izumo 693-8501.
Background:
This prospective study was conducted to investigate the effects and complications of continuous peripheral nerve blocks after major orthopedic surgery using a catheter placed under ultrasound guidance.
Methods:
We studied 182 adult patients who underwent one of three types of major orthopedic surgery and received peripheral nerve blocks with one or two perineural catheters: continuous femoral nerve block after reconstruction of the anterior cruciate ligament, n=93; continuous femoral with or without sciatic nerve block after total knee arthroplasty, n=39; and continuous brachial plexus block after arthroscopic surgery of the shoulder, n=50. All the patients received additional single peripheral nerve block and/or general anesthesia for surgery. A continuous injection of 0.2-0.25% ropivacaine was started immediately after surgery at a rate of 4-6 ml x hr(-1), with a 3 ml patient-controlled bolus available every 30 min, and lasted for at least 48hr. Pain was evaluated at rest and during movement,
Results:
Despite large inter-individual variation, continuous peripheral nerve block produced satisfactory postoperative analgesia without any apparent major complications.
Conclusions:
Peripheral nerve block and catheter placement under ultrasound guidance may help manage postoperative analgesia after orthopedic surgery easily, reliably and safely.
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