[Ultrasound-guided sciatic nerve block].
Theoretically, sciatic nerve block can be used alone or in combination with lumbar plexus block or femoral nerve block for anesthesia and/or analgesia of lower limb surgery. However, clinical use of sciatic nerve block was limited by technical difficulties in performing the block since techniques used relies only on surface anatomical landmarks. Recent advances in ultrasound technology allow direct visualization of nerves and other surrounding structures and have increased the interest in performing many kinds of peripheral nerve blocks including sciatic nerve block. Preliminary data suggest that ultrasound-guided technique can help perform the sciatic nerve block more reliably and safely. In this article we describe the anatomy of the sciatic nerve, sonographic features, and technique of three major approaches including subgluteal, anterior, and popliteal approaches. The use of this technique for postoperative analgesia is also discussed.
Ota
Junichi
J
Department of Anesthesiology, Shimane University Faculty of Medicine, Izumo 693-8501.
Hara
Kaoru
K
D006801:Humans; D009407:Nerve Block / Q000379:methods*; D010149:Postoperative Pain / Q000628:therapy; D012584:Sciatic Nerve / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D014463:Ultrasonography / Q000379:methods*