motor ataxia

ataxia /atax·ia/ (ah-tak´se-ah) failure of muscular coordination; irregularity of muscular action.atac´ticatax´ic

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Bruns' frontal ataxia  a disturbance of equilibrium and gait due to a lesion in the frontal lobe, characterized by assumption of a broad-based gait with the feet flat on the ground and a tendency to retropulsion.

Friedreich's ataxia  hereditary sclerosis of the dorsal and lateral columns of the spine, usually beginning in childhood or youth; it is attended with ataxia, speech impairment, scoliosis, peculiar movements, paralysis, and often hypertrophic cardiomyopathy.

locomotor ataxia  tabes dorsalis.

motor ataxia  inability to control the coordinate movements of the muscles.

sensory ataxia  ataxia due to loss of proprioception (joint position sensation) between the motor cortex and peripheral nerves, resulting in poorly judged movements, the incoordination becoming aggravated when the eyes are closed.

ataxia-telangiectasia  a severe autosomal recessive progressive cerebellar ataxia, associated with oculocutaneous telangiectasia, abnormal eye movements, sinopulmonary disease, and immunodeficiency.

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motor ataxia

n.

Inability to perform coordinated muscular movements necessary for moving the body, as for walking.

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motor ataxia,

an inability to perform coordinated movements. Also called kinetic ataxia.