clonus


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Related to clonus: ankle clonus

clo·nus

 (klō′nəs)
n. pl. clo·nus·es
An abnormality in neuromuscular activity characterized by rapidly alternating muscular contraction and relaxation.

[New Latin, from Greek klonos, turmoil.]

clon′ic (klŏn′ĭk, klō′nĭk) adj.
clo·nic′i·ty (klō-nĭs′ĭ-tē, klŏ-), clo′nism (klō′nĭz′əm, klŏn′ĭz′əm) n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

clonus

(ˈkləʊnəs)
n
(Pathology) a type of convulsion characterized by rapid contraction and relaxation of a muscle
[C19: from New Latin, from Greek klonos turmoil]
clonic adj
clonicity n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

clo•nus

(ˈkloʊ nəs)

n., pl. -nus•es.
a rapid succession of flexions and extensions of a muscle group during movement, often symptomatic of a nervous system disorder.
[1810–20; < New Latin < Greek klónos turmoil]
clon•ic (ˈklɒn ɪk) adj.
clo•nic•i•ty (kloʊˈnɪs ɪ ti, klɒ-) n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.clonus - convulsion characterized by alternating contractions and relaxations
convulsion - violent uncontrollable contractions of muscles
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

clo·nus

n. Gr. clono, serie de contracciones rápidas y rítmicas de un músculo.
English-Spanish Medical Dictionary © Farlex 2012

clonus

n clonus m
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
As the severity progresses to life-threatening, the clonus may convert from inducible to spontaneous and slow, continuous lateral eye movements may be present.
DAKOTA has cerebral palsy and suffers from seizures, global developmental disorder and muscle disorders clonus and dystonia.
(4) It is well known that PTZ, at doses of 90 to 100 mg/kg, creates generalized tonic-clonic seizures (GTCs) in rodents which progress from mild myoclonic jerks to the clonus of the face and forelimbs without righting reflex loss, to the clonic seizures of the limbs with righting reflex loss, to the full tonic extension of both forelimbs and hind limbs.
The Achilles reflexes were absent in both lower extremities, and no pathological reflexes were noted (i.e., Babinski, ankle clonus).
Stages of seizure activity were; (0) no difference; (1) freezing; (2) tongue protrusion and neck spasms; (3) forelimb clonus; (4) forelimb clonus and tonic activity in the upper part of the body with rearing and/or falling over; (5) generalized convulsions with rearing, falling over and jumping.
Physical examination revealed that upper motor neuron findings were identified in the form of spasticity, hyperreflexia, and clonus. Hyperreflexia and spasticity were present all over the upper and lower limbs but more marked in lower than upper limbs.
Left LL--in initial testing it has a deficit paretic motor, ROT vii, Babinski present, possible orthostatism with bilateral support; in final testing - paretic motor deficit, motor control partially recovered - distal, Ashworth spasticity = 2 plantar flexors, plantar clonus (2-3 muscular contractions), Achilles tendon retraction, Babinski present, ROT vii, genu flexum(flexed knee) 20[degrees], Left side hip - limited mobility : ROE = 30[degrees], ROI = absent, flexion = 90[degrees], absent abduction and extension, abduction = 15[degrees].
Mid-August, during a dressing change, the intern doctor noted clonus of the lower limbs and investigated thoroughly.
In the chronic stage of capsular hemiplegia, H reflex and even the tendon reflex are elicited in pretibial muscles in addition to hyperactive tendon reflex with ankle clonus in the triceps surae muscles.
Facial Muscle Spasm (FMS) refers to the stiffness or clonus of muscles controlled by homolateral facial nerves, which is painless, intermittent, unspontaneous and irregular.