supinator longus reflex
bra·chi·o·ra·di·al re·flex
with the arm supinated to 45°, a tap near the lower end of the radius causes contraction of the brachioradial (supinator longus) muscle.
Synonym(s): radioperiosteal reflex, styloradial reflex, supination reflex, supinator jerk, supinator reflex, supinator longus reflex
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