A case of motor disturbance in upper limb by parietal lesion; limb kinetic apraxia without visual compensation?
Hosomi, A.; Yoshikawa, K.; Yamada, K.; Nakagawa, M.
Rinsho Shinkeigaku 45(6): 411-415
2005
ISSN/ISBN: 0009-918X PMID: 16022464 Document Number: 590308
We report a 75-year-old right-handed man who showed limbkinetic apraxia in the left hand caused by brain infarction of the right parietal lobe including postcentral gyrus. The hand shaping and posture preceding grasping was not appropriate, and clumsiness of the hand was not corrected by visual guidance. Fiber-tracking of the sensorimotor tract on diffusion tensor MRI and electrophysiological studies revealed that the lesion involved the area 1, 2, 5, and 7 of the cortices in Brodmann's nomenclature. In the most cases with limbkinetic apraxia caused by posterior lesion in the center region, hand clumsiness in manipulation should be corrected by visual guidance, which did not function in this case due to coexisting disturbances of kinesthesia with relatively large lesion in the parietal cortex.