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Course of the brachial plexus and subclavian artery between the anterior scalene and middle scalene muscles as seen from coronal oblique (A) and
sagittal oblique (B) perspectives. Dilatation of the subclavian artery just distal to the anterior scalene muscle is illustrated in (A). Immediately distal to the
anterior and middle scalene muscles is another potential area of constriction, between the clavicle and the first rib. With extension of the neck and turning
of the chin to the affected side (Adson maneuver), the tension on the anterior scalene muscle is increased and the subclavian artery compressed, resulting
in a supraclavicular bruit and obliteration of the radial pulse.
Source: Chapter 11. Pain in the Back, Neck, and Extremities, Adams and Victor's Principles of Neurology, 10e
Citation: Ropper AH, Samuels MA, Klein JP. Adams and Victor's Principles of Neurology, 10e; 2014 Available at: http://mhmedical.com/
Accessed: April 29, 2017
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