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FIG 7. Costoclavicular space (cords).
A, Position of the probe to explore the brachial plexus at the costoclavicular space by an infraclavicular approach.
B, Sonogram (90° left rotated) in a 31-year-old female volunteer shows clusters of round hypoechoic neural fascicles of the different nerve cords at the costoclavicular space.
C, Sagittal gross oblique anatomic section of the costoclavicular space.
In B and/or C, 1 indicates subclavius muscle; 2, pectoralis major muscle; 3, axillary artery; 4, axillary vein; 5, posterior nerve cord; 6, lateral nerve cord; 7, medial nerve cord; S, skin.
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