Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to cogwheel rigidity: lead pipe rigidity
inflexibility or stiffness.
clasp-knife rigidity increased tension in the extensor of a joint when it is passively flexed, giving way suddenly on exertion of further pressure; seen especially in upper motor neuron disease. Called also clasp-knife reflex.
cogwheel rigidity tension in a muscle that gives way in little jerks when the muscle is passively stretched; seen in parkinson's disease.
decerebrate rigidity see decerebrate rigidity.
decorticate rigidity see decorticate rigidity.
paratonic rigidity an intermittent abnormal increase in resistance to passive movement in a comatose patient.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
a type of rigidity seen in parkinsonism in which the muscles respond with cogwheellike jerks to the use of constant force in bending the limb.
Farlex Partner Medical Dictionary © Farlex 2012
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
cog·wheel ri·gid·i·ty(kog'wēl ri-jid'i-tē)
A type of rigidity seen in parkinsonism in which the muscles respond with cogwheellike jerks to the use of constant force in bending the limb.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012