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World J Neurol. Dec 28, 2013; 3(4): 129-132
Published online Dec 28, 2013. doi: 10.5316/wjn.v3.i4.129
Pure motor stroke as the most frequent lacunar syndrome: A clinical update
Adrià Arboix, María José Sánchez, Josep Lluís Martí-Vilalta
Adrià Arboix, Cerebrovascular Division, Department of Neurology, Hospital Universitari del Sagrat Cor, Universitat de Barcelona, E-08029 Barcelona, Catalonia, Spain
María José Sánchez, Medical Library, Hospital Universitari Sagrat Cor, E-08029 Barcelona, Catalonia, Spain
Josep Lluís Martí-Vilalta, Acute Stroke Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, E-08026 Barcelona, Catalonia, Spain
Author contributions: Arboix A is the principal investigator, designed the minireview and wrote the paper, is also the corresponding author; Sánchez MJ contributed to write the paper, conducted the literature review, edited the manuscript and provided editorial assistance; Martí-Vilalta JL participated in the revision of the manuscript for intellectual content; All have read and approved the final version to be published.
Correspondence to: Adrià Arboix, MD, PhD, Cerebrovascular Division, Department of Neurology, Hospital Universitari del Sagrat Cor, Universitat de Barcelona, Viladomat 288, E-08029 Barcelona, Catalonia, Spain. aarboix@hscor.com
Telephone: +34–934948940 Fax: +34–934948906
Received: September 6, 2013
Revised: October 9, 2013
Accepted: October 11, 2013
Published online: December 28, 2013
Abstract

Pure motor stroke (PMS), also known as pure motor hemiparesis, is the most common of any lacunar form (between one half and two thirds of cases, depending on the series). In an acute stroke registry, 733 patients presented a lacunar infarct and PMS accounted for 12.7% (n = 342) of all first-ever stroke patients and for 48% of all lacunar syndromes. The posterior limb of the internal capsule, corona radiata, and pons are the most frequent brain topographies. Infarcts in the mesencephalus or medullary pyramid have been exceptionally reported. This present update is focused on the clinical evidence and mechanisms underlying the relationship between PMS and different stroke etiologies.

Keywords: Pure motor stroke, Lacunar syndromes, Lacunar stroke, Cerebrovascular diseases, Stroke

Core tip: Pure motor stroke (PMS) is the most common of any lacunar form (between one half and two thirds of cases). The posterior limb of the internal capsule, corona radiata, and pons are the most frequent brain topographies. This present update is focused on the clinical evidence and mechanisms underlying the relationship between PMS and different stroke etiologies.