sensory ataxia造句

• Patients with sensory ataxia often demonstrate pseudoathetosis and Romberg's sign.
• Worsening of the finger-pointing test with the eyes closed is another feature of sensory ataxia.
• Spinal disorders of various types may cause sensory ataxia from the lesioned level below, when they involve the dorsal columns
• Physicians can find evidence of sensory ataxia during physical examination by having the patient stand with his / her feet together and eyes shut.
• Sensory ataxia also lacks the associated features of cerebellar ataxia such as pendular tendon reflexes, scanning dysarthria, nystagmus and broken pursuit eye movements.
• Peripheral neuropathies may cause generalised or localised sensory ataxia ( e . g . a limb only ) depending on the extent of the neuropathic involvement.
• The term sensory ataxia is employed to indicate ataxia due to loss of proprioception, the loss of sensitivity to the positions of joint and body parts.
• In some cases, the cause of sensory ataxia may instead be dysfunction of the various parts of the brain which receive positional information, including the cerebellum, thalamus, and parietal lobes.
• The unsteadiness with eyes closed ( sensory ataxia ), relates to loss of sense of position in the legs and feet that are normally compensated for by the patient who uses vision to provide that information.
• A selective impairment of the large proprioceptive sensory fibers without motor impairment can occur and present as a prominent sensory ataxia, which is a loss of balance and coordination due to loss of the proprioceptive inputs from the periphery and loss of position sense.
• Sensory ataxia is distinguished from cerebellar ataxia by the presence of near-normal coordination when the movement in question is visually observed by the patient, but marked worsening of coordination when the eyes are shut, indicating a positive Romberg's sign.
• Sensory ataxia presents itself with an unsteady " stomping " gait with heavy heel strikes, as well as a postural instability that is usually worsened when the lack of proprioceptive input cannot be compensated for by visual input, such as in poorly lit environments.
• Ataxia may depend on hereditary disorders consisting of degeneration of the cerebellum and / or of the spine; most cases feature both to some extent, and therefore present with overlapping cerebellar and sensory ataxia, even though one is often more evident than the other.
• Earlier work by the Irish physician Robert Bentley Todd ( 1847 ), Ernest Horn, and Moritz Heinrich Romberg ( 1851 ) had described Tabes dorsalis and noted atrophy of the spinal cord, but in an important paper, Gull also stressed the involvement of the posterior column in paraplegia with sensory ataxia [ 12 ].