Early brain imaging predictors of post-stroke spasticity

Area of Science:

• Neurology
• Radiology
• Rehabilitation Medicine

Background:

• Post-stroke spasticity significantly hinders recovery and rehabilitation in stroke survivors.
• Predicting spasticity is crucial for effective patient management.
• Brain imaging predictors for post-stroke spasticity remain underexplored.

Purpose of the Study:

• To identify early brain imaging predictors of post-stroke spasticity using magnetic resonance imaging (MRI).
• To investigate the relationship between lesion volume and location and the development of spasticity.

Main Methods:

• Prospective screening of consecutive patients with first-ever supratentorial ischemic stroke.
• Clinical assessments for spasticity performed within 7 days and at 3 months post-stroke.
• Baseline 3 Tesla MRI data collected and analyzed for lesion characteristics.

Main Results:

• 103 patients' MRI data analyzed in the hyperacute phase (within 7 days).
• Larger brain lesion volumes in motor network areas correlated significantly with post-stroke spasticity (p < 0.01).
• Supratentorial lesions <0.5 cm3 showed low spasticity risk, except when involving the internal capsule and striatum.

Conclusions:

• Lesions within motor network areas are key preconditions for post-stroke spasticity.
• Larger lesion volumes (>3 cm3) in motor areas increase the likelihood of developing spasticity.
• Pure cortical lesions do not appear to increase the risk of post-stroke spasticity.