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Fig. 3 | Trials

Fig. 3

From: Effects of C8 nerve root block during interscalene brachial plexus block on anesthesia of the posterior shoulder in patients undergoing arthroscopic shoulder surgery: study protocol for a prospective randomized parallel-group controlled trial

Fig. 3

Ultrasound-guided C5 to C8 nerve root block for interscalene brachial plexus block. a The C5 to C8 nerve roots located between the anterior and middle scalene muscles. The C8 nerve root lies on the first rib, and the C5 and C6 nerve roots are fused into the upper trunk of the brachial plexus. b Spread of local anesthetic around the C8 nerve root. c The separated C5 and C6 nerve roots visualized by the oblique rotation of the medial side of the ultrasonography transducer. d Spread of local anesthetic around the C5 and C6 nerve roots

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Trials

ISSN: 1745-6215