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The brachioradialis reflex (also known as supinator reflex [1])is observed during a neurological exam by striking the brachioradialis tendon (at its insertion at the base of the wrist into the radial styloid process (radial side of wrist around 4 inches proximal to base of thumb)) directly with a hammer when the patient's arm is relaxing. This reflex is caused by the Radial nerve C5,C6 spinal nerve.

The reflex should cause slight wrist extension and/or radial deviation, supination[1] and slight elbow flexion.

See also


  1. Springhouse (1 July 2007). Neurologic Care, 60–, Lippincott Williams & Wilkins. URL accessed 4 July 2011.

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