Does stroke location predict walk speed response to gait rehabilitation?

Jones, P. Simon, Pomeroy, Valerie ORCID: https://orcid.org/0000-0003-4487-823X, Wang, Jasmine, Schlaug, Gottfried, Marrapu, Siva, Geva, Sharon, Rowe, Philip, Chandler, Elizabeth, Kerr, Andrew and Baron, Jean-Claude (2016) Does stroke location predict walk speed response to gait rehabilitation? Human Brain Mapping, 37 (2). 689–703. ISSN 1065-9471

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Abstract

Objectives: Recovery of independent ambulation after stroke is a major goal. However, which rehabilitation regimen best benefits each individual is unknown and decisions are currently made on a subjective basis. Predictors of response to specific therapies would guide the type of therapy most appropriate for each patient. Although lesion topography is a strong predictor of upper limb response, walking involves more distributed functions. Earlier studies that assessed the cortico-spinal tract (CST) were negative, suggesting other structures may be important. Experimental Design: The relationship between lesion topography and response of walking speed to standard rehabilitation was assessed in 50 adult-onset patients using both volumetric measurement of CST lesion load and voxel-based lesion–symptom mapping (VLSM) to assess non-CST structures. Two functional mobility scales, the functional ambulation category (FAC) and the modified rivermead mobility index (MRMI) were also administered. Performance measures were obtained both at entry into the study (3–42 days post-stroke) and at the end of a 6-week course of therapy. Baseline score, age, time since stroke onset and white matter hyperintensities score were included as nuisance covariates in regression models. Principal Observations: CST damage independently predicted response to therapy for FAC and MRMI, but not for walk speed. However, using VLSM the latter was predicted by damage to the putamen, insula, external capsule and neighbouring white matter. Conclusions: Walk speed response to rehabilitation was affected by damage involving the putamen and neighbouring structures but not the CST, while the latter had modest but significant impact on everyday functions of general mobility and gait.

Item Type:	Article
Additional Information:	© 2015 The Authors Human Brain Mapping Published by Wiley Periodicals, Inc. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Uncontrolled Keywords:	mri,vlsm,cortico-spinal tract,recovery,ambulation
Faculty \ School:	Faculty of Medicine and Health Sciences > School of Health Sciences
Depositing User:	Pure Connector
Date Deposited:	02 Dec 2015 10:00
Last Modified:	22 Oct 2022 00:24
URI:	https://ueaeprints.uea.ac.uk/id/eprint/55626
DOI:	10.1002/hbm.23059

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