Journal of Clinical Neurology  2006;2(2):146-148

doi:10.3988/jcn.2006.2.2.146

Isolated Weakness of Middle, Ring, and Little Fingers due to a Small Cortical Infarction in the Medial Precentral Gyrus.

Young Su HAN 1 ; Sang Won HA ; Jeong Seon CHO ; Sang Eun PARK ; Jung Mee KIM ; Jeong Ho HAN ; Eun Kyoung CHO ; Doo Eung KIM

Affiliations

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Keywords

Cortical infarction; Precentral gyrus; Finger weakness

Country

Republic of Korea

Language

English

Abstract

Small cortical strokes can produce predominant isolated weakness in a particular group of fingers: radial or ulnar. The traditional views are of point-to-point representations of each finger to neurons located in the precentral gyrus of the motor cortex such that the neurons of the radial fingers are located laterally and those of the ulnar fingers are located medially. We present a case of isolated weakness of middle, ring, and little fingers due to a small cortical infarction in the medial precentral gyrus.