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basal joint reflex

basal joint reflex in Medicine

basal joint reflex n.
A reflex of the thumb in which the metacarpophalangeal joint flexes and the interphalangeal joint extends in response to firm passive flexion of the third, fourth, or fifth finger. Also called finger-thumb reflex, Mayer's reflex.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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