The supplementary motor area syndrome: a neurosurgical review.

Autor: Pinson H; Department of Neurosurgery, AZ Delta, Roeselare, Belgium. harry.pinson@ugent.be.; Department of Neurosurgery, Ghent University Hospital, C. Heymanslaan 10, 9000, Ghent, Belgium. harry.pinson@ugent.be., Van Lerbeirghe J; Department of Neurosurgery, AZ Delta, Roeselare, Belgium., Vanhauwaert D; Department of Neurosurgery, AZ Delta, Roeselare, Belgium., Van Damme O; Department of Neurosurgery, AZ Delta, Roeselare, Belgium., Hallaert G; Department of Neurosurgery, Ghent University Hospital, C. Heymanslaan 10, 9000, Ghent, Belgium., Kalala JP; Department of Neurosurgery, Ghent University Hospital, C. Heymanslaan 10, 9000, Ghent, Belgium.
Jazyk: angličtina
Zdroj: Neurosurgical review [Neurosurg Rev] 2022 Feb; Vol. 45 (1), pp. 81-90. Date of Electronic Publication: 2021 May 15.
DOI: 10.1007/s10143-021-01566-6
Abstrakt: The supplementary motor area (SMA) syndrome is a frequently encountered clinical phenomenon associated with surgery of the dorsomedial prefrontal lobe. The region has a known motor sequencing function and the dominant pre-SMA specifically is associated with more complex language functions; the SMA is furthermore incorporated in the negative motor network. The SMA has a rich interconnectivity with other cortical regions and subcortical structures using the frontal aslant tract (FAT) and the frontostriatal tract (FST). The development of the SMA syndrome is positively correlated with the extent of resection of the SMA region, especially its medial side. This may be due to interruption of the nearby callosal association fibres as the contralateral SMA has a particular important function in brain plasticity after SMA surgery. The syndrome is characterized by a profound decrease in interhemispheric connectivity of the motor network hubs. Clinical improvement is related to increasing connectivity between the contralateral SMA region and the ipsilateral motor hubs. Overall, most patients know a full recovery of the SMA syndrome, however a minority of patients might continue to suffer from mild motor and speech dysfunction. Rarely, no recovery of neurological function after SMA region resection is reported.
(© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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