ankle jerk

noun

Medical Definition of ankle jerk

: a reflex downward movement of the foot produced by a spasmodic contraction of the muscles of the calf in response to sudden extension of the leg or the striking of the Achilles tendon above the heel

called also Achilles reflex

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Cite this Entry

“Ankle jerk.” The Merriam-Webster.com Medical Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/medical/ankle%20jerk. Accessed 13 December 2019.

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