clasp-knife spasticity


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Related to clasp-knife spasticity: clasp knife phenomenon

spasticity

 [spas-tis´ĭ-te]
continuous resistance to stretching by a muscle due to abnormally increased tension, with heightened deep tendon reflexes.
clasp-knife spasticity clasp-knife rigidity.

clasp-knife spas·tic·i·ty

a type of increased muscle tone due to a pyramidal tract lesion, in which abnormally increased resistance to passive stretch of a muscle abruptly decreases; typically, this appears near the end of the range of joint excursion.
See also: lengthening reaction.

clasp-knife spasticity

or

clasp-knife rigidity

n.
Rigidity of the extensor muscles of a joint that gives way abruptly to allow easy flexion, resulting from an exaggeration of the stretch reflex.

clasp-knife spasticity

clasp-knife rigidity.

clasp-knife spas·ti·ci·ty

, clasp-knife rigidity (klaspnīf' spas-tis'i-tē, ri-jid'i-tē)
Initial increased resistance to stretch of the extensor muscles of a joint that give way rather suddenly, allowing the joint then to be easily flexed; the rigidity is due to an exaggeration of the stretch reflex.

clasp-knife spas·ti·ci·ty

, clasp-knife rigidity (klaspnīf' spas-tis'i-tē, ri-jid'i-tē)
Initial increased resistance to stretch of the extensor muscles of a joint that give way rather suddenly, allowing the joint then to be easily flexed; the rigidity is due to an exaggeration of the stretch reflex.