foot clonus

foot clonus
ankle c.

Medical dictionary. 2011.

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  • Clonus — (from the Greek for violent, confused motion ) is a series of involuntary muscular contractions and relaxations. Clonus is a sign of certain neurological conditions, and is particularly associated with upper motor neuron lesions such as in stroke …   Wikipedia

  • clonus — A form of movement marked by contractions and relaxations of a muscle, occurring in rapid succession seen with, among other conditions, spasticity and some seizure disorders. SEE ALSO: contraction. [G. klonos, a tumult] ankle c. a rhythmic… …   Medical dictionary

  • clonus — n. rhythmical contraction of a muscle in response to a suddenly applied and then sustained stretch stimulus. It is most readily obtained at the ankle when the examiner bends the foot sharply upwards and then maintains an upward pressure on the… …   The new mediacal dictionary

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  • patellar clonus — rhythmic jerking movement of the patella produced by grasping it between the thumb and forefinger and pushing it suddenly and forcibly toward the foot; this is an abnormal reflex with alternate contraction and relaxation of the quadriceps muscle …   Medical dictionary

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