Neural Correlates of Lower Extremity Motor Recovery in Stroke Patients: Longitudinal Diffusion Spectrum Imaging Studies

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT00407628

Enrollment

Registered

2006-12-05

Start date

2006-08-31

Completion date

2009-07-31

Last updated

2013-07-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Stroke

Keywords

Stroke, Diffusion spectrum tractography, Functional MRI (fMRI), Lower extremity

Brief summary

To investigate the relationship between the integrity of the white matter, including the corticospinal tracts and the corpus callosum, with the recovery of lower extremity function in patients with cerebral stroke at the subacute and chronic stages.

Detailed description

Recent studies have provided strong evidence that motor recovery after adult ischemic stroke is a function of neural plasticity. Up to date, it remains largely unknown as to the relationship between the integrity of the subcortical white matter with the lower extremity function recovery. Given the fact that the white matter is more resistant to ischemia after acute stroke than the gray matter (Falcao et al., 2004) and that the intensity of white matter in stroke has been found to be much greater in many brain areas in stroke than in healthy controls (Wen et al., 2004), it is of interest to study how the integrity of the subcortical white matter, primarily the corticospinal tracts and the corpus callosum, contributes to the recovery of lower extremity function in subacute and chronic stroke with lesions involving different areas of the brain.

Interventions

None listed

Study design

Observational model

CASE_CONTROL

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

30 Years to 80 Years

Healthy volunteers

Yes

Inclusion criteria

* between 30 to 80 years old * diagnosis of the first-time onset of stroke as confirmed by imaging studies * within 30 days post onset University Hospital * brain lesions mainly involving either the cortical primary motor cortex (M1) area or confined to the subcortical (M1 spared) * No neurological or orthopedic problems which would affect their lower extremity function * no contraindications for MRI studies

Exclusion criteria

* medically unstable * unable to communicate with the experimenters

Design outcomes

Primary

Measure	Time frame
clinical assessments, included balance, motor, walking,ADL, will be obtained for tests performed on D7, D30 and D90	D30, D90 and D180 post stroke onset

Countries

China

Outcome results